Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot - ballot
Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot - ballot
Evidence Based Medicine on FHIR Implementation Guide, published by HL7 International / Clinical Decision Support. This guide is not an authorized publication; it is the continuous build for version 1.0.0-ballot built by the FHIR (HL7® FHIR® Standard) CI Build. This version is based on the current content of https://github.com/HL7/ebm/ and changes regularly. See the Directory of published versions
| Page standards status: Draft | Maturity Level: 1 |
XML representation of the participant-flow-measure resource profile.
<StructureDefinition xmlns="http://hl7.org/fhir">
<id value="participant-flow-measure"/>
<text>
<status value="extensions"/>
<div xmlns="http://www.w3.org/1999/xhtml"><table border="0" cellpadding="0" cellspacing="0" style="border: 0px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top;"><tr style="border: 1px #F0F0F0 solid; font-size: 11px; font-family: verdana; vertical-align: top"><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="The logical name of the element">Name</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Information about the use of the element">Flags</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Minimum and Maximum # of times the the element can appear in the instance">Card.</a></th><th style="width: 100px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Reference to the type of the element">Type</a></th><th style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Additional information about the element">Description & Constraints</a><span style="float: right"><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAABAAAAAQCAYAAAAf8/9hAAAABmJLR0QA/wD/AP+gvaeTAAAACXBIWXMAAAsTAAALEwEAmpwYAAAAB3RJTUUH3goXBCwdPqAP0wAAAldJREFUOMuNk0tIlFEYhp9z/vE2jHkhxXA0zJCMitrUQlq4lnSltEqCFhFG2MJFhIvIFpkEWaTQqjaWZRkp0g26URZkTpbaaOJkDqk10szoODP//7XIMUe0elcfnPd9zsfLOYplGrpRwZaqTtw3K7PtGem7Q6FoidbGgqHVy/HRb669R+56zx7eRV1L31JGxYbBtjKK93cxeqfyQHbehkZbUkK20goELEuIzEd+dHS+qz/Y8PTSif0FnGkbiwcAjHaU1+QWOptFiyCLp/LnKptpqIuXHx6rbR26kJcBX3yLgBfnd7CxwJmflpP2wUg0HIAoUUpZBmKzELGWcN8nAr6Gpu7tLU/CkwAaoKTWRSQyt89Q8w6J+oVQkKnBoblH7V0PPvUOvDYXfopE/SJmALsxnVm6LbkotrUtNowMeIrVrBcBpaMmdS0j9df7abpSuy7HWehwJdt1lhVwi/J58U5beXGAF6c3UXLycw1wdFklArBn87xdh0ZsZtArghBdAA3+OEDVubG4UEzP6x1FOWneHh2VDAHBAt80IbdXDcesNoCvs3E5AFyNSU5nbrDPZpcUEQQTFZiEVx+51fxMhhyJEAgvlriadIJZZksRuwBYMOPBbO3hePVVqgEJhFeUuFLhIPkRP6BQLIBrmMenujm/3g4zc398awIe90Zb5A1vREALqneMcYgP/xVQWlG+Ncu5vgwwlaUNx+3799rfe96u9K0JSDXcOzOTJg4B6IgmXfsygc7/Bvg9g9E58/cDVmGIBOP/zT8Bz1zqWqpbXIsd0O9hajXfL6u4BaOS6SeWAAAAAElFTkSuQmCC" alt="doco" style="background-color: inherit"/></a></span></th></tr><tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: white"><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck1.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_resource.png" alt="." style="background-color: white; background-color: inherit" title="Resource" class="hierarchy"/> <a href="StructureDefinition-participant-flow-measure-definitions.html#EvidenceVariable">EvidenceVariable</a><a name="EvidenceVariable"> </a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a href="StructureDefinition-variable-definition.html">VariableDefinition</a></td><td style="vertical-align: top; text-align : left; background-color: white; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/></tr>
<tr style="border: 0px #F0F0F0 solid; padding:0px; vertical-align: top; background-color: #F7F7F7"><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px; white-space: nowrap; background-image: url(tbl_bck00.png)" class="hierarchy"><img src="tbl_spacer.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="tbl_vjoin_end.png" alt="." style="background-color: inherit" class="hierarchy"/><img src="icon_element.gif" alt="." style="background-color: #F7F7F7; background-color: inherit" title="Element" class="hierarchy"/> <a href="StructureDefinition-participant-flow-measure-definitions.html#EvidenceVariable.handling">handling</a><a name="EvidenceVariable.handling"> </a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"/><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">1</span><span style="opacity: 0.5">..</span><span style="opacity: 0.5">1</span></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><a style="opacity: 0.5" href="http://hl7.org/fhir/R5/datatypes.html#code">code</a></td><td style="vertical-align: top; text-align : left; background-color: #F7F7F7; border: 0px #F0F0F0 solid; padding:0px 4px 0px 4px" class="hierarchy"><span style="opacity: 0.5">continuous | dichotomous | ordinal | polychotomous</span><br/><span style="font-weight:bold">Required Pattern: </span><span style="color: darkgreen">dichotomous</span></td></tr>
<tr><td colspan="5" class="hierarchy"><br/><a href="https://build.fhir.org/ig/FHIR/ig-guidance/readingIgs.html#table-views" title="Legend for this format"><img src="data:image/png;base64,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" alt="doco" style="background-color: inherit"/> Documentation for this format</a></td></tr></table></div>
</text>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-implements">
<valueUri
value="http://hl7.org/fhir/StructureDefinition/MetadataResource"/>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
<valueInteger value="1"/>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-wg">
<valueCode value="cds"/>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status">
<valueCode value="draft"/>
</extension>
<url
value="http://hl7.org/fhir/uv/ebm/StructureDefinition/participant-flow-measure"/>
<version value="1.0.0-ballot"/>
<name value="ParticipantFlowMeasure"/>
<status value="draft"/>
<date value="2024-04-27T20:42:39+00:00"/>
<publisher value="HL7 International / Clinical Decision Support"/>
<contact>
<name value="HL7 International / Clinical Decision Support"/>
<telecom>
<system value="url"/>
<value value="http://www.hl7.org/Special/committees/dss"/>
</telecom>
</contact>
<description
value="Profile of EvidenceVariable for Evidence Based Medicine IG. The ParticipantFlowMeasure Profile is used to describe outcome measures for completion and reasons for non-completion of participation in a research study."/>
<jurisdiction>
<coding>
<system value="http://unstats.un.org/unsd/methods/m49/m49.htm"/>
<code value="001"/>
<display value="World"/>
</coding>
</jurisdiction>
<fhirVersion value="5.0.0"/>
<mapping>
<identity value="w5"/>
<uri value="http://hl7.org/fhir/fivews"/>
<name value="FiveWs Pattern Mapping"/>
</mapping>
<mapping>
<identity value="objimpl"/>
<uri value="http://hl7.org/fhir/object-implementation"/>
<name value="Object Implementation Information"/>
</mapping>
<mapping>
<identity value="rim"/>
<uri value="http://hl7.org/v3"/>
<name value="RIM Mapping"/>
</mapping>
<kind value="resource"/>
<abstract value="false"/>
<type value="EvidenceVariable"/>
<baseDefinition
value="http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition"/>
<derivation value="constraint"/>
<snapshot>
<element id="EvidenceVariable">
<path value="EvidenceVariable"/>
<short value="A definition of an exposure, outcome, or other variable"/>
<definition
value="The EvidenceVariable resource describes an element that knowledge (Evidence) is about."/>
<comment
value="The EvidenceVariable may be an exposure variable (intervention, condition, or state), a measured variable (outcome or observed parameter), or other variable (such as confounding factor)."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable"/>
<min value="0"/>
<max value="*"/>
</base>
<constraint>
<key value="cnl-0"/>
<severity value="warning"/>
<human
value="Name should be usable as an identifier for the module by machine processing applications such as code generation"/>
<expression
value="name.exists() implies name.matches('^[A-Z]([A-Za-z0-9_]){1,254}$')"/>
<source
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="w5"/>
<map value="conformance.behavior,clinical.general"/>
</mapping>
</element>
<element id="EvidenceVariable.id">
<path value="EvidenceVariable.id"/>
<short value="Logical id of this artifact"/>
<definition
value="The logical id of the resource, as used in the URL for the resource. Once assigned, this value never changes."/>
<comment
value="Within the context of the FHIR RESTful interactions, the resource has an id except for cases like the create and conditional update. Otherwise, the use of the resouce id depends on the given use case."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Resource.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="id"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.meta">
<path value="EvidenceVariable.meta"/>
<short value="Metadata about the resource"/>
<definition
value="The metadata about the resource. This is content that is maintained by the infrastructure. Changes to the content might not always be associated with version changes to the resource."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Resource.meta"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Meta"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.implicitRules">
<path value="EvidenceVariable.implicitRules"/>
<short value="A set of rules under which this content was created"/>
<definition
value="A reference to a set of rules that were followed when the resource was constructed, and which must be understood when processing the content. Often, this is a reference to an implementation guide that defines the special rules along with other profiles etc."/>
<comment
value="Asserting this rule set restricts the content to be only understood by a limited set of trading partners. This inherently limits the usefulness of the data in the long term. However, the existing health eco-system is highly fractured, and not yet ready to define, collect, and exchange data in a generally computable sense. Wherever possible, implementers and/or specification writers should avoid using this element. Often, when used, the URL is a reference to an implementation guide that defines these special rules as part of its narrative along with other profiles, value sets, etc."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Resource.implicitRules"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="uri"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="true"/>
<isModifierReason
value="This element is labeled as a modifier because the implicit rules may provide additional knowledge about the resource that modifies its meaning or interpretation"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.language">
<path value="EvidenceVariable.language"/>
<short value="Language of the resource content"/>
<definition
value="The base language in which the resource is written."/>
<comment
value="Language is provided to support indexing and accessibility (typically, services such as text to speech use the language tag). The html language tag in the narrative applies to the narrative. The language tag on the resource may be used to specify the language of other presentations generated from the data in the resource. Not all the content has to be in the base language. The Resource.language should not be assumed to apply to the narrative automatically. If a language is specified, it should it also be specified on the div element in the html (see rules in HTML5 for information about the relationship between xml:lang and the html lang attribute)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Resource.language"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="code"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="Language"/>
</extension>
<strength value="required"/>
<description value="IETF language tag for a human language"/>
<valueSet value="http://hl7.org/fhir/ValueSet/all-languages|5.0.0"/>
<additional>
<purpose value="starter"/>
<valueSet value="http://hl7.org/fhir/ValueSet/languages"/>
</additional>
</binding>
</element>
<element id="EvidenceVariable.text">
<path value="EvidenceVariable.text"/>
<short value="Text summary of the resource, for human interpretation"/>
<definition
value="A human-readable narrative that contains a summary of the resource and can be used to represent the content of the resource to a human. The narrative need not encode all the structured data, but is required to contain sufficient detail to make it "clinically safe" for a human to just read the narrative. Resource definitions may define what content should be represented in the narrative to ensure clinical safety."/>
<comment
value="Contained resources do not have a narrative. Resources that are not contained SHOULD have a narrative. In some cases, a resource may only have text with little or no additional discrete data (as long as all minOccurs=1 elements are satisfied). This may be necessary for data from legacy systems where information is captured as a "text blob" or where text is additionally entered raw or narrated and encoded information is added later."/>
<alias value="narrative"/>
<alias value="html"/>
<alias value="xhtml"/>
<alias value="display"/>
<min value="0"/>
<max value="1"/>
<base>
<path value="DomainResource.text"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Narrative"/>
</type>
<condition value="dom-6"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="Act.text?"/>
</mapping>
</element>
<element id="EvidenceVariable.contained">
<path value="EvidenceVariable.contained"/>
<short value="Contained, inline Resources"/>
<definition
value="These resources do not have an independent existence apart from the resource that contains them - they cannot be identified independently, nor can they have their own independent transaction scope. This is allowed to be a Parameters resource if and only if it is referenced by a resource that provides context/meaning."/>
<comment
value="This should never be done when the content can be identified properly, as once identification is lost, it is extremely difficult (and context dependent) to restore it again. Contained resources may have profiles and tags in their meta elements, but SHALL NOT have security labels."/>
<alias value="inline resources"/>
<alias value="anonymous resources"/>
<alias value="contained resources"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="DomainResource.contained"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Resource"/>
</type>
<condition value="dom-2"/>
<condition value="dom-4"/>
<condition value="dom-3"/>
<condition value="dom-5"/>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="EvidenceVariable.extension">
<path value="EvidenceVariable.extension"/>
<slicing>
<discriminator>
<type value="value"/>
<path value="url"/>
</discriminator>
<ordered value="false"/>
<rules value="open"/>
</slicing>
<short value="Extension"/>
<definition value="An Extension"/>
<min value="1"/>
<max value="*"/>
<base>
<path value="DomainResource.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.extension:definition">
<path value="EvidenceVariable.extension"/>
<sliceName value="definition"/>
<short value="Defines the variable with a concept and/or Reference"/>
<definition
value="Defines the variable with a concept and/or Reference."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="DomainResource.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
<profile
value="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-definition"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
</element>
<element id="EvidenceVariable.modifierExtension">
<path value="EvidenceVariable.modifierExtension"/>
<short value="Extensions that cannot be ignored"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the resource and that modifies the understanding of the element that contains it and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer is allowed to define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="DomainResource.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the resource that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="EvidenceVariable.url">
<path value="EvidenceVariable.url"/>
<short
value="Canonical identifier for this evidence variable, represented as a URI (globally unique)"/>
<definition
value="An absolute URI that is used to identify this evidence variable when it is referenced in a specification, model, design or an instance; also called its canonical identifier. This SHOULD be globally unique and SHOULD be a literal address at which an authoritative instance of this evidence variable is (or will be) published. This URL can be the target of a canonical reference. It SHALL remain the same when the evidence variable is stored on different servers."/>
<comment
value="In some cases, the resource can no longer be found at the stated url, but the url itself cannot change. Implementations can use the meta.source element to indicate where the current master source of the resource can be found."/>
<requirements
value="Allows the evidence variable to be referenced by a single globally unique identifier."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.url"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="uri"/>
</type>
<constraint>
<key value="cnl-1"/>
<severity value="warning"/>
<human
value="URL should not contain | or # - these characters make processing canonical references problematic"/>
<expression value="exists() implies matches('^[^|# ]+$')"/>
<source
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable"/>
</constraint>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.identifier"/>
</mapping>
</element>
<element id="EvidenceVariable.identifier">
<path value="EvidenceVariable.identifier"/>
<short value="Additional identifier for the evidence variable"/>
<definition
value="A formal identifier that is used to identify this evidence variable when it is represented in other formats, or referenced in a specification, model, design or an instance."/>
<comment
value="Typically, this is used for identifiers that can go in an HL7 V3 II (instance identifier) data type, and can then identify this evidence variable outside of FHIR, where it is not possible to use the logical URI."/>
<requirements
value="Allows externally provided and/or usable business identifiers to be easily associated with the module."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.identifier"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Identifier"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.identifier"/>
</mapping>
<mapping>
<identity value="objimpl"/>
<map value="no-gen-base"/>
</mapping>
</element>
<element id="EvidenceVariable.version">
<path value="EvidenceVariable.version"/>
<short value="Business version of the evidence variable"/>
<definition
value="The identifier that is used to identify this version of the evidence variable when it is referenced in a specification, model, design or instance. This is an arbitrary value managed by the evidence variable author and is not expected to be globally unique. For example, it might be a timestamp (e.g. yyyymmdd) if a managed version is not available. There is also no expectation that versions can be placed in a lexicographical sequence. To provide a version consistent with the Decision Support Service specification, use the format Major.Minor.Revision (e.g. 1.0.0). For more information on versioning knowledge assets, refer to the Decision Support Service specification. Note that a version is required for non-experimental active artifacts."/>
<comment
value="There may be different evidence variable instances that have the same identifier but different versions. The version can be appended to the url in a reference to allow a reference to a particular business version of the evidence variable with the format [url]|[version]. The version SHOULD NOT contain a '#' - see [Business Version](http://hl7.org/fhir/R5/resource.html#bv-format)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.version"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.version"/>
</mapping>
</element>
<element id="EvidenceVariable.versionAlgorithm[x]">
<path value="EvidenceVariable.versionAlgorithm[x]"/>
<short value="How to compare versions"/>
<definition
value="Indicates the mechanism used to compare versions to determine which is more current."/>
<comment
value="If set as a string, this is a FHIRPath expression that has two additional context variables passed in - %version1 and %version2 and will return a negative number if version1 is newer, a positive number if version2 is newer, and a 0 if the version ordering can't successfully be determined."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.versionAlgorithm[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<type>
<code value="Coding"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<binding>
<strength value="extensible"/>
<valueSet value="http://hl7.org/fhir/ValueSet/version-algorithm"/>
</binding>
</element>
<element id="EvidenceVariable.name">
<path value="EvidenceVariable.name"/>
<short value="Name for this evidence variable (computer friendly)"/>
<definition
value="A natural language name identifying the evidence variable. This name should be usable as an identifier for the module by machine processing applications such as code generation."/>
<comment
value="The name is not expected to be globally unique. The name should be a simple alphanumeric type name to ensure that it is machine-processing friendly."/>
<requirements value="Support human navigation and code generation."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.name"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<condition value="cnl-0"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.title">
<path value="EvidenceVariable.title"/>
<short value="Name for this evidence variable (human friendly)"/>
<definition
value="A short, descriptive, user-friendly title for the evidence variable."/>
<comment
value="This name does not need to be machine-processing friendly and may contain punctuation, white-space, etc."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.title"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.shortTitle">
<path value="EvidenceVariable.shortTitle"/>
<short value="Title for use in informal contexts"/>
<definition
value="The short title provides an alternate title for use in informal descriptive contexts where the full, formal title is not necessary."/>
<requirements
value="Need to be able to reference the content by a short description, but still provide a longer, more formal title for the content."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.shortTitle"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.status">
<path value="EvidenceVariable.status"/>
<short value="draft | active | retired | unknown"/>
<definition
value="The status of this evidence variable. Enables tracking the life-cycle of the content."/>
<comment
value="Allows filtering of evidence variables that are appropriate for use versus not.
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.status"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="code"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="true"/>
<isModifierReason
value="This is labeled as "Is Modifier" because applications should not use a retired {{title}} without due consideration"/>
<isSummary value="true"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="PublicationStatus"/>
</extension>
<strength value="required"/>
<description value="The lifecycle status of an artifact."/>
<valueSet
value="http://hl7.org/fhir/ValueSet/publication-status|5.0.0"/>
</binding>
<mapping>
<identity value="w5"/>
<map value="FiveWs.status"/>
</mapping>
</element>
<element id="EvidenceVariable.experimental">
<path value="EvidenceVariable.experimental"/>
<short value="For testing purposes, not real usage"/>
<definition
value="A Boolean value to indicate that this resource is authored for testing purposes (or education/evaluation/marketing) and is not intended to be used for genuine usage."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.experimental"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="boolean"/>
</type>
<meaningWhenMissing
value="If absent, this resource is treated as though it is not experimental."/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.date">
<path value="EvidenceVariable.date"/>
<short value="Date last changed"/>
<definition
value="The date (and optionally time) when the evidence variable was last significantly changed. The date must change when the business version changes and it must change if the status code changes. In addition, it should change when the substantive content of the evidence variable changes."/>
<comment
value="The date is often not tracked until the resource is published, but may be present on draft content. Note that this is not the same as the resource last-modified-date, since the resource may be a secondary representation of the evidence variable. Additional specific dates may be added as extensions or be found by consulting Provenances associated with past versions of the resource.
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<alias value="Revision Date"/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.date"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="dateTime"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.recorded"/>
</mapping>
</element>
<element id="EvidenceVariable.publisher">
<path value="EvidenceVariable.publisher"/>
<short
value="Name of the publisher/steward (organization or individual)"/>
<definition
value="The name of the organization or individual responsible for the release and ongoing maintenance of the evidence variable."/>
<comment
value="Usually an organization but may be an individual. The publisher (or steward) of the evidence variable is the organization or individual primarily responsible for the maintenance and upkeep of the evidence variable. This is not necessarily the same individual or organization that developed and initially authored the content. The publisher is the primary point of contact for questions or issues with the evidence variable. This item SHOULD be populated unless the information is available from context."/>
<requirements
value="Helps establish the "authority/credibility" of the evidence variable. May also allow for contact."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.publisher"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.witness"/>
</mapping>
</element>
<element id="EvidenceVariable.contact">
<path value="EvidenceVariable.contact"/>
<short value="Contact details for the publisher"/>
<definition
value="Contact details to assist a user in finding and communicating with the publisher."/>
<comment
value="Extensions to ContactDetail include: contactReference, contactAddress, and contributionTime (see [Clinical Reasoning Module](clinicalreasoning-module.html)).
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.contact"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="ContactDetail"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.description">
<path value="EvidenceVariable.description"/>
<short value="Natural language description of the evidence variable"/>
<definition
value="A free text natural language description of the evidence variable from a consumer's perspective."/>
<comment
value="This description can be used to capture details such as comments about misuse, instructions for clinical use and interpretation, literature references, examples from the paper world, etc. It is not a rendering of the evidence variable as conveyed in the 'text' field of the resource itself. This item SHOULD be populated unless the information is available from context (e.g. the language of the evidence variable is presumed to be the predominant language in the place the evidence variable was created)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.description"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="markdown"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.note">
<path value="EvidenceVariable.note"/>
<short value="Used for footnotes or explanatory notes"/>
<definition
value="A human-readable string to clarify or explain concepts about the resource."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.note"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Annotation"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.useContext">
<path value="EvidenceVariable.useContext"/>
<short value="The context that the content is intended to support"/>
<definition
value="The content was developed with a focus and intent of supporting the contexts that are listed. These contexts may be general categories (gender, age, ...) or may be references to specific programs (insurance plans, studies, ...) and may be used to assist with indexing and searching for appropriate evidence variable instances."/>
<comment
value="When multiple useContexts are specified, there is no expectation that all or any of the contexts apply."/>
<requirements value="Assist in searching for appropriate content."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.useContext"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="UsageContext"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.purpose">
<path value="EvidenceVariable.purpose"/>
<short value="Why this EvidenceVariable is defined"/>
<definition
value="Explanation of why this EvidenceVariable is needed and why it has been designed as it has."/>
<comment
value="This element does not describe the usage of the EvidenceVariable. Instead, it provides traceability of ''why'' the resource is either needed or ''why'' it is defined as it is. This may be used to point to source materials or specifications that drove the structure of this EvidenceVariable."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.purpose"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="markdown"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="w5"/>
<map value="FiveWs.why[x]"/>
</mapping>
<mapping>
<identity value="objimpl"/>
<map value="no-gen-base"/>
</mapping>
</element>
<element id="EvidenceVariable.copyright">
<path value="EvidenceVariable.copyright"/>
<short value="Use and/or publishing restrictions"/>
<definition
value="A copyright statement relating to the resource and/or its contents. Copyright statements are generally legal restrictions on the use and publishing of the resource."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.copyright"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="markdown"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.copyrightLabel">
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
<valueBoolean value="true"/>
</extension>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-translatable">
<valueBoolean value="true"/>
</extension>
<path value="EvidenceVariable.copyrightLabel"/>
<short value="Copyright holder and year(s)"/>
<definition
value="A short string (<50 characters), suitable for inclusion in a page footer that identifies the copyright holder, effective period, and optionally whether rights are resctricted. (e.g. 'All rights reserved', 'Some rights reserved')."/>
<comment
value="The (c) symbol should NOT be included in this string. It will be added by software when rendering the notation. Full details about licensing, restrictions, warrantees, etc. goes in the more general 'copyright' element."/>
<requirements
value="Defines the content expected to be rendered in all representations of the artifact."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.copyrightLabel"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.approvalDate">
<path value="EvidenceVariable.approvalDate"/>
<short value="When the resource was approved by publisher"/>
<definition
value="The date on which the resource content was approved by the publisher. Approval happens once when the content is officially approved for usage.
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.approvalDate"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="date"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.lastReviewDate">
<path value="EvidenceVariable.lastReviewDate"/>
<short value="When the resource was last reviewed by the publisher"/>
<definition
value="The date on which the resource content was last reviewed. Review happens periodically after approval but does not change the original approval date."/>
<comment
value="If specified, this date follows the original approval date.
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.lastReviewDate"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="date"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.effectivePeriod">
<path value="EvidenceVariable.effectivePeriod"/>
<short value="When the resource is expected to be used"/>
<definition
value="The period during which the resource content was or is planned to be in active use."/>
<comment
value="The effective period for an EvidenceVariable determines when the content is applicable for usage and is independent of publication and review dates. For example, a variable intended to be used for the year 2016 might be published in 2015.
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.effectivePeriod"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Period"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.author">
<path value="EvidenceVariable.author"/>
<short value="Who authored the content"/>
<definition
value="An individiual or organization primarily involved in the creation and maintenance of the content."/>
<comment
value="Extensions to ContactDetail include: contactReference, contactAddress, and contributionTime (see [Clinical Reasoning Module](clinicalreasoning-module.html))."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.author"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="ContactDetail"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value=".participation[typeCode=AUT]"/>
</mapping>
</element>
<element id="EvidenceVariable.editor">
<path value="EvidenceVariable.editor"/>
<short value="Who edited the content"/>
<definition
value="An individual or organization primarily responsible for internal coherence of the content."/>
<comment
value="Extensions to ContactDetail include: contactReference, contactAddress, and contributionTime (see [Clinical Reasoning Module](clinicalreasoning-module.html))."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.editor"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="ContactDetail"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.reviewer">
<path value="EvidenceVariable.reviewer"/>
<short value="Who reviewed the content"/>
<definition
value="An individual or organization asserted by the publisher to be primarily responsible for review of some aspect of the content."/>
<comment
value="Extensions to ContactDetail include: contactReference, contactAddress, and contributionTime (see [Clinical Reasoning Module](clinicalreasoning-module.html)).
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.reviewer"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="ContactDetail"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map
value=".participation[typeCode=VRF] {not clear whether VRF best corresponds to reviewer or endorser}"/>
</mapping>
</element>
<element id="EvidenceVariable.endorser">
<path value="EvidenceVariable.endorser"/>
<short value="Who endorsed the content"/>
<definition
value="An individual or organization asserted by the publisher to be responsible for officially endorsing the content for use in some setting."/>
<comment
value="Extensions to ContactDetail include: contactReference, contactAddress, and contributionTime (see [Clinical Reasoning Module](clinicalreasoning-module.html)).
See guidance around (not) making local changes to elements [here](canonicalresource.html#localization)."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.endorser"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="ContactDetail"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map
value=".participation[typeCode=VRF] {not clear whether VRF best corresponds to reviewer or endorser}"/>
</mapping>
</element>
<element id="EvidenceVariable.relatedArtifact">
<path value="EvidenceVariable.relatedArtifact"/>
<short value="Additional documentation, citations, etc"/>
<definition
value="Related artifacts such as additional documentation, justification, or bibliographic references."/>
<comment
value="Each related artifact is either an attachment, or a reference to another resource, but not both."/>
<requirements
value="EvidenceVariables must be able to provide enough information for consumers of the content (and/or interventions or results produced by the content) to be able to determine and understand the justification for and evidence in support of the content."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.relatedArtifact"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="RelatedArtifact"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.actual">
<path value="EvidenceVariable.actual"/>
<short value="Actual or conceptual"/>
<definition
value="True if the actual variable measured, false if a conceptual representation of the intended variable."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.actual"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="boolean"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic">
<path value="EvidenceVariable.characteristic"/>
<short value="A defining factor of the EvidenceVariable"/>
<definition
value="A defining factor of the EvidenceVariable. Multiple characteristics are applied with "and" semantics."/>
<comment
value="Characteristics can be defined flexibly to accommodate different use cases for membership criteria, ranging from simple codes, all the way to using an expression language to express the criteria."/>
<min value="0"/>
<max value="0"/>
<base>
<path value="EvidenceVariable.characteristic"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="BackboneElement"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="evv-1"/>
<severity value="error"/>
<human
value="In a characteristic, at most one of these six elements shall be used: definitionReference or definitionCanonical or definitionCodeableConcept or definitionId or definitionByTypeAndValue or definitionByCombination"/>
<expression
value="(definitionReference.count() + definitionCanonical.count() + definitionCodeableConcept.count() + definitionId.count() + definitionByTypeAndValue.count() + definitionByCombination.count()) < 2"/>
<source
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.id">
<path value="EvidenceVariable.characteristic.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<condition value="ele-1"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element id="EvidenceVariable.characteristic.extension">
<path value="EvidenceVariable.characteristic.extension"/>
<short value="Additional content defined by implementations"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<alias value="extensions"/>
<alias value="user content"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element id="EvidenceVariable.characteristic.modifierExtension">
<path value="EvidenceVariable.characteristic.modifierExtension"/>
<short value="Extensions that cannot be ignored even if unrecognized"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<alias value="modifiers"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="BackboneElement.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="EvidenceVariable.characteristic.linkId">
<path value="EvidenceVariable.characteristic.linkId"/>
<short value="Label for internal linking"/>
<definition
value="Label used for when a characteristic refers to another characteristic."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.linkId"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="id"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.description">
<path value="EvidenceVariable.characteristic.description"/>
<short value="Natural language description of the characteristic"/>
<definition
value="A short, natural language description of the characteristic that could be used to communicate the criteria to an end-user."/>
<requirements
value="Need to be able to describe characteristics in natural language so that end users can understand the criteria."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.description"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="markdown"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.note">
<path value="EvidenceVariable.characteristic.note"/>
<short value="Used for footnotes or explanatory notes"/>
<definition
value="A human-readable string to clarify or explain concepts about the characteristic."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.characteristic.note"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Annotation"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.exclude">
<path value="EvidenceVariable.characteristic.exclude"/>
<short
value="Whether the characteristic is an inclusion criterion or exclusion criterion"/>
<definition
value="When true, this characteristic is an exclusion criterion. In other words, not matching this characteristic definition is equivalent to meeting this criterion."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.exclude"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="boolean"/>
</type>
<meaningWhenMissing value="False"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.definitionReference">
<path value="EvidenceVariable.characteristic.definitionReference"/>
<short
value="Defines the characteristic (without using type and value) by a Reference"/>
<definition value="Defines the characteristic using a Reference."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.definitionReference"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Reference"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable"/>
<targetProfile value="http://hl7.org/fhir/StructureDefinition/Group"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/Evidence"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.definitionCanonical">
<path value="EvidenceVariable.characteristic.definitionCanonical"/>
<short
value="Defines the characteristic (without using type and value) by a Canonical"/>
<definition value="Defines the characteristic using Canonical."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.definitionCanonical"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="canonical"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/Evidence"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.definitionCodeableConcept">
<path
value="EvidenceVariable.characteristic.definitionCodeableConcept"/>
<short
value="Defines the characteristic (without using type and value) by a CodeableConcept"/>
<definition value="Defines the characteristic using CodeableConcept."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionCodeableConcept"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.definitionExpression">
<path value="EvidenceVariable.characteristic.definitionExpression"/>
<short
value="Defines the characteristic (without using type and value) by an expression"/>
<definition value="Defines the characteristic using Expression."/>
<comment
value="When another element provides a definition of the characteristic, the definitionExpression content SHALL match the definition (only adding technical concepts necessary for implementation) without changing the meaning."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.definitionExpression"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Expression"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.definitionId">
<path value="EvidenceVariable.characteristic.definitionId"/>
<short
value="Defines the characteristic (without using type and value) by an id"/>
<definition value="Defines the characteristic using id."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.definitionId"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="id"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element id="EvidenceVariable.characteristic.definitionByTypeAndValue">
<path value="EvidenceVariable.characteristic.definitionByTypeAndValue"/>
<short value="Defines the characteristic using type and value"/>
<definition
value="Defines the characteristic using both a type and value[x] elements."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="BackboneElement"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.id">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<condition value="ele-1"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.extension">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.extension"/>
<short value="Additional content defined by implementations"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<alias value="extensions"/>
<alias value="user content"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.modifierExtension">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.modifierExtension"/>
<short value="Extensions that cannot be ignored even if unrecognized"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<alias value="modifiers"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="BackboneElement.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.type">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.type"/>
<short value="Expresses the type of characteristic"/>
<definition value="Used to express the type of characteristic."/>
<min value="1"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.type"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="UsageContextType"/>
</extension>
<strength value="example"/>
<valueSet
value="http://terminology.hl7.org/ValueSet/usage-context-type"/>
</binding>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.method">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.method"/>
<short value="Method for how the characteristic value was determined"/>
<definition
value="Method for how the characteristic value was determined."/>
<min value="0"/>
<max value="*"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.method"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="DefinitionMethod"/>
</extension>
<strength value="example"/>
<valueSet value="http://hl7.org/fhir/ValueSet/definition-method"/>
</binding>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.device">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.device"/>
<short value="Device used for determining characteristic"/>
<definition value="Device used for determining characteristic."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.device"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Reference"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/Device"/>
<targetProfile
value="http://hl7.org/fhir/StructureDefinition/DeviceMetric"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]"/>
<short
value="Defines the characteristic when coupled with characteristic.type"/>
<definition
value="Defines the characteristic when paired with characteristic.type."/>
<min value="1"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.value[x]"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<type>
<code value="boolean"/>
</type>
<type>
<code value="Quantity"/>
</type>
<type>
<code value="Range"/>
</type>
<type>
<code value="Reference"/>
</type>
<type>
<code value="id"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="true"/>
</element>
<element
id="EvidenceVariable.characteristic.definitionByTypeAndValue.offset">
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.offset"/>
<short value="Reference point for valueQuantity or valueRange"/>
<definition
value="Defines the reference point for comparison when valueQuantity or valueRange is not compared to zero."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByTypeAndValue.offset"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="CharacteristicOffset"/>
</extension>
<strength value="example"/>
<valueSet value="http://hl7.org/fhir/ValueSet/characteristic-offset"/>
</binding>
</element>
<element id="EvidenceVariable.characteristic.definitionByCombination">
<path value="EvidenceVariable.characteristic.definitionByCombination"/>
<short
value="Used to specify how two or more characteristics are combined"/>
<definition
value="Defines the characteristic as a combination of two or more characteristics."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByCombination"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="BackboneElement"/>
</type>
<condition value="evv-1"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.definitionByCombination.id">
<path
value="EvidenceVariable.characteristic.definitionByCombination.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<condition value="ele-1"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByCombination.extension">
<path
value="EvidenceVariable.characteristic.definitionByCombination.extension"/>
<short value="Additional content defined by implementations"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<alias value="extensions"/>
<alias value="user content"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByCombination.modifierExtension">
<path
value="EvidenceVariable.characteristic.definitionByCombination.modifierExtension"/>
<short value="Extensions that cannot be ignored even if unrecognized"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<alias value="modifiers"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="BackboneElement.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.definitionByCombination.code">
<path
value="EvidenceVariable.characteristic.definitionByCombination.code"/>
<short
value="all-of | any-of | at-least | at-most | statistical | net-effect | dataset"/>
<definition
value="Used to specify if two or more characteristics are combined with OR or AND."/>
<requirements
value="If code is "at-least" or "at-most" then threshold SHALL be used. If code is neither "at-least" nor "at-most" then threshold SHALL NOT be used."/>
<min value="1"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByCombination.code"/>
<min value="1"/>
<max value="1"/>
</base>
<type>
<code value="code"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="CharacteristicCombination"/>
</extension>
<strength value="required"/>
<valueSet
value="http://hl7.org/fhir/ValueSet/characteristic-combination|5.0.0"/>
</binding>
</element>
<element
id="EvidenceVariable.characteristic.definitionByCombination.threshold">
<path
value="EvidenceVariable.characteristic.definitionByCombination.threshold"/>
<short
value="Provides the value of "n" when "at-least" or "at-most" codes are used"/>
<definition
value="Provides the value of "n" when "at-least" or "at-most" codes are used."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByCombination.threshold"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="positiveInt"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element
id="EvidenceVariable.characteristic.definitionByCombination.characteristic">
<path
value="EvidenceVariable.characteristic.definitionByCombination.characteristic"/>
<short value="A defining factor of the characteristic"/>
<definition value="A defining factor of the characteristic."/>
<min value="1"/>
<max value="*"/>
<base>
<path
value="EvidenceVariable.characteristic.definitionByCombination.characteristic"/>
<min value="1"/>
<max value="*"/>
</base>
<contentReference
value="http://hl7.org/fhir/StructureDefinition/EvidenceVariable#EvidenceVariable.characteristic"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.instances[x]">
<path value="EvidenceVariable.characteristic.instances[x]"/>
<short value="Number of occurrences meeting the characteristic"/>
<definition value="Number of occurrences meeting the characteristic."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.instances[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Quantity"/>
</type>
<type>
<code value="Range"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.duration[x]">
<path value="EvidenceVariable.characteristic.duration[x]"/>
<short value="Length of time in which the characteristic is met"/>
<definition value="Length of time in which the characteristic is met."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.duration[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Quantity"/>
</type>
<type>
<code value="Range"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent">
<path value="EvidenceVariable.characteristic.timeFromEvent"/>
<short value="Timing in which the characteristic is determined"/>
<definition value="Timing in which the characteristic is determined."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.characteristic.timeFromEvent"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="BackboneElement"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.id">
<path value="EvidenceVariable.characteristic.timeFromEvent.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<condition value="ele-1"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.extension">
<path value="EvidenceVariable.characteristic.timeFromEvent.extension"/>
<short value="Additional content defined by implementations"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<alias value="extensions"/>
<alias value="user content"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element
id="EvidenceVariable.characteristic.timeFromEvent.modifierExtension">
<path
value="EvidenceVariable.characteristic.timeFromEvent.modifierExtension"/>
<short value="Extensions that cannot be ignored even if unrecognized"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<alias value="modifiers"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="BackboneElement.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.description">
<path
value="EvidenceVariable.characteristic.timeFromEvent.description"/>
<short value="Human readable description"/>
<definition value="Human readable description."/>
<min value="0"/>
<max value="1"/>
<base>
<path
value="EvidenceVariable.characteristic.timeFromEvent.description"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="markdown"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.note">
<path value="EvidenceVariable.characteristic.timeFromEvent.note"/>
<short value="Used for footnotes or explanatory notes"/>
<definition
value="A human-readable string to clarify or explain concepts about the timeFromEvent."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.characteristic.timeFromEvent.note"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Annotation"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.event[x]">
<path value="EvidenceVariable.characteristic.timeFromEvent.event[x]"/>
<short
value="The event used as a base point (reference point) in time"/>
<definition
value="The event used as a base point (reference point) in time."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.timeFromEvent.event[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<type>
<code value="Reference"/>
</type>
<type>
<code value="dateTime"/>
</type>
<type>
<code value="id"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="EvidenceVariableEvent"/>
</extension>
<strength value="example"/>
<valueSet
value="http://hl7.org/fhir/ValueSet/evidence-variable-event"/>
</binding>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.quantity">
<path value="EvidenceVariable.characteristic.timeFromEvent.quantity"/>
<short
value="Used to express the observation at a defined amount of time before or after the event"/>
<definition
value="Used to express the observation at a defined amount of time before or after the event."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.timeFromEvent.quantity"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Quantity"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.characteristic.timeFromEvent.range">
<path value="EvidenceVariable.characteristic.timeFromEvent.range"/>
<short
value="Used to express the observation within a period before and/or after the event"/>
<definition
value="Used to express the observation within a period before and/or after the event."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.characteristic.timeFromEvent.range"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="Range"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.handling">
<path value="EvidenceVariable.handling"/>
<short value="continuous | dichotomous | ordinal | polychotomous"/>
<definition value="The method of handling in statistical analysis."/>
<min value="1"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.handling"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="code"/>
</type>
<patternCode value="dichotomous"/>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
<binding>
<extension
url="http://hl7.org/fhir/StructureDefinition/elementdefinition-bindingName">
<valueString value="EvidenceVariableHandling"/>
</extension>
<strength value="required"/>
<valueSet
value="http://hl7.org/fhir/ValueSet/variable-handling|5.0.0"/>
</binding>
</element>
<element id="EvidenceVariable.category">
<path value="EvidenceVariable.category"/>
<short value="A grouping for ordinal or polychotomous variables"/>
<definition value="A grouping for ordinal or polychotomous variables."/>
<min value="0"/>
<max value="*"/>
<base>
<path value="EvidenceVariable.category"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="BackboneElement"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.category.id">
<path value="EvidenceVariable.category.id"/>
<representation value="xmlAttr"/>
<short value="Unique id for inter-element referencing"/>
<definition
value="Unique id for the element within a resource (for internal references). This may be any string value that does not contain spaces."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.id"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<extension
url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fhir-type">
<valueUrl value="string"/>
</extension>
<code value="http://hl7.org/fhirpath/System.String"/>
</type>
<condition value="ele-1"/>
<isModifier value="false"/>
<isSummary value="false"/>
<mapping>
<identity value="rim"/>
<map value="n/a"/>
</mapping>
</element>
<element id="EvidenceVariable.category.extension">
<path value="EvidenceVariable.category.extension"/>
<slicing>
<discriminator>
<type value="value"/>
<path value="url"/>
</discriminator>
<ordered value="false"/>
<rules value="open"/>
</slicing>
<short value="Extension"/>
<definition value="An Extension"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.category.extension:valueReference">
<path value="EvidenceVariable.category.extension"/>
<sliceName value="valueReference"/>
<short value="Defines the categorical value with a Reference"/>
<definition value="Defines the categorical value with a Reference."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="Element.extension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
<profile
value="http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-category-value-reference"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="false"/>
</element>
<element id="EvidenceVariable.category.modifierExtension">
<path value="EvidenceVariable.category.modifierExtension"/>
<short value="Extensions that cannot be ignored even if unrecognized"/>
<definition
value="May be used to represent additional information that is not part of the basic definition of the element and that modifies the understanding of the element in which it is contained and/or the understanding of the containing element's descendants. Usually modifier elements provide negation or qualification. To make the use of extensions safe and managable, there is a strict set of governance applied to the definition and use of extensions. Though any implementer can define an extension, there is a set of requirements that SHALL be met as part of the definition of the extension. Applications processing a resource are required to check for modifier extensions.
Modifier extensions SHALL NOT change the meaning of any elements on Resource or DomainResource (including cannot change the meaning of modifierExtension itself)."/>
<comment
value="There can be no stigma associated with the use of extensions by any application, project, or standard - regardless of the institution or jurisdiction that uses or defines the extensions. The use of extensions is what allows the FHIR specification to retain a core level of simplicity for everyone."/>
<requirements
value="Modifier extensions allow for extensions that *cannot* be safely ignored to be clearly distinguished from the vast majority of extensions which can be safely ignored. This promotes interoperability by eliminating the need for implementers to prohibit the presence of extensions. For further information, see the [definition of modifier extensions](http://hl7.org/fhir/R5/extensibility.html#modifierExtension)."/>
<alias value="extensions"/>
<alias value="user content"/>
<alias value="modifiers"/>
<min value="0"/>
<max value="*"/>
<base>
<path value="BackboneElement.modifierExtension"/>
<min value="0"/>
<max value="*"/>
</base>
<type>
<code value="Extension"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<constraint>
<key value="ext-1"/>
<severity value="error"/>
<human value="Must have either extensions or value[x], not both"/>
<expression value="extension.exists() != value.exists()"/>
<source value="http://hl7.org/fhir/StructureDefinition/Extension"/>
</constraint>
<isModifier value="true"/>
<isModifierReason
value="Modifier extensions are expected to modify the meaning or interpretation of the element that contains them"/>
<isSummary value="true"/>
<mapping>
<identity value="rim"/>
<map value="N/A"/>
</mapping>
</element>
<element id="EvidenceVariable.category.name">
<path value="EvidenceVariable.category.name"/>
<short value="Description of the grouping"/>
<definition value="Description of the grouping."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.category.name"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="string"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
<element id="EvidenceVariable.category.value[x]">
<path value="EvidenceVariable.category.value[x]"/>
<short value="Definition of the grouping"/>
<definition value="Definition of the grouping."/>
<min value="0"/>
<max value="1"/>
<base>
<path value="EvidenceVariable.category.value[x]"/>
<min value="0"/>
<max value="1"/>
</base>
<type>
<code value="CodeableConcept"/>
</type>
<type>
<code value="Quantity"/>
</type>
<type>
<code value="Range"/>
</type>
<constraint>
<key value="ele-1"/>
<severity value="error"/>
<human value="All FHIR elements must have a @value or children"/>
<expression
value="hasValue() or (children().count() > id.count())"/>
<source value="http://hl7.org/fhir/StructureDefinition/Element"/>
</constraint>
<mustSupport value="false"/>
<isModifier value="false"/>
<isSummary value="false"/>
</element>
</snapshot>
<differential>
<element id="EvidenceVariable.handling">
<path value="EvidenceVariable.handling"/>
<patternCode value="dichotomous"/>
</element>
</differential>
</StructureDefinition>
IG © 2022+ HL7 International / Clinical Decision Support. Package hl7.fhir.uv.ebm#1.0.0-ballot based on FHIR 5.0.0. Generated 2024-04-27
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