Evidence Based Medicine on FHIR Implementation Guide
1.0.0-ballot3 - STU 1 Ballot 3 World

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-ballot3 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

: NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022

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<Evidence xmlns="http://hl7.org/fhir">
  <id value="423311"/>
  <meta>
    <versionId value="6"/>
    <lastUpdated value="2026-01-26T21:00:20.675Z"/>
    <profile
             value="http://hl7.org/fhir/uv/ebm/StructureDefinition/net-effect-estimate"/>
  </meta>
  <language value="en"/>
  <text>
    <status value="generated"/>
    <div xmlns="http://www.w3.org/1999/xhtml"><p class="res-header-id"><b>Generated Narrative: Evidence 423311</b></p><a name="423311"> </a><a name="hc423311"> </a><div style="display: inline-block; background-color: #fbffeb; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%"><p style="margin-bottom: 0px">version: 6; Last updated: 2026-01-26 21:00:20+0000</p><p style="margin-bottom: 0px">Profile: <a href="StructureDefinition-net-effect-estimate.html">NetEffectEstimate</a></p></div><p><b>url</b>: <a href="Evidence-423311.html">Evidence NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022</a></p><p><b>identifier</b>: FEvIR Object Identifier/423311, <a href="http://terminology.hl7.org/7.5.0/NamingSystem-uri.html" title="As defined by RFC 3986 (http://www.ietf.org/rfc/rfc3986.txt)(with many schemes defined in many RFCs). For OIDs and UUIDs, use the URN form (urn:oid:(note: lowercase) and urn:uuid:). See http://www.ietf.org/rfc/rfc3001.txt and http://www.ietf.org/rfc/rfc4122.txt 

This oid is used as an identifier II.root to indicate the the extension is an absolute URI (technically, an IRI). Typically, this is used for OIDs and GUIDs. Note that when this OID is used with OIDs and GUIDs, the II.extension should start with urn:oid or urn:uuid: 

Note that this OID is created to aid with interconversion between CDA and FHIR - FHIR uses urn:ietf:rfc:3986 as equivalent to this OID. URIs as identifiers appear more commonly in FHIR.

This OID may also be used in CD.codeSystem.">Uniform Resource Identifier (URI)</a>/urn:oid:2.16.840.1.113883.4.642.40.44.22.219</p><p><b>version</b>: 1.0.0-ballot3</p><p><b>name</b>: NetEffectEstimate_for_SummaryOfNetEffect_Bariatric_Surgery_Summary_of_Net_Effect_Contributions_Example_for_GIN_2022</p><p><b>title</b>: NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022</p><p><b>citeAs</b>: </p><div><p>NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022 [Database Entry: FHIR Evidence Resource]. Contributors: Computable Publishing: Net Effect Generator, Brian S. Alper, MD, MSPH [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 423311. Revised 2026-01-26. Available at: https://fevir.net/resources/Evidence/423311. Computable resource at: https://fevir.net/resources/Evidence/423311#json.</p>
</div><p><b>status</b>: Active</p><p><b>date</b>: 2026-11-05 14:34:28+0000</p><p><b>author</b>: Computable Publishing: Net Effect Generator: , Brian S. Alper, MD, MSPH: </p><p><b>publisher</b>: HL7 International / Clinical Decision Support</p><p><b>contact</b>: HL7 International / Clinical Decision Support: <a href="http://www.hl7.org/Special/committees/dss">http://www.hl7.org/Special/committees/dss</a></p><p><b>copyright</b>: </p><div><p>https://creativecommons.org/licenses/by-nc-sa/4.0/</p>
</div><p><b>description</b>: </p><div><p>This Evidence Resource is referenced in an example for the EBMonFHIR Implementation Guide.</p>
</div><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>Adults with diabetes and obesity</p>
</div><p><b>variableRole</b>: Population</p><p><b>intended</b>: <a href="Group-170443.html">StudyEligibilityCriteria: Eligibility Criteria for Bariatric Surgery Randomized Trial (Diabetes Surgery Study)</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>comparison groups of bariatric surgery vs. no bariatric surgery</p>
</div><p><b>variableRole</b>: Exposure</p><p><b>comparatorCategory</b>: no bariatric surgery</p><p><b>intended</b>: <a href="EvidenceVariable-172427.html">GroupAssignment: Bariatric Surgery vs. no bariatric surgery</a></p></blockquote><blockquote><p><b>variableDefinition</b></p><p><b>description</b>: </p><div><p>composite outcome derived from NetEffectContributions</p>
</div><p><b>variableRole</b>: Outcome</p><p><b>observed</b>: <a href="Group-179584.html">NetEffectContributions: Bariatric Surgery Example for GIN 2022</a></p></blockquote><blockquote><p><b>statistic</b></p><p><b>statisticType</b>: <span title="Codes:{https://fevir.net/sevco STATO:0000424}">risk difference</span></p><p><b>quantity</b>: 4.695</p><h3>AttributeEstimates</h3><table class="grid"><tr><td style="display: none">-</td><td><b>Type</b></td><td><b>Level</b></td><td><b>Range</b></td></tr><tr><td style="display: none">*</td><td><span title="Codes:{https://fevir.net/sevco STATO:0000196}">confidence interval</span></td><td>0.95</td><td>1.4049834821843223-7.985016517815678</td></tr></table><h3>ModelCharacteristics</h3><table class="grid"><tr><td style="display: none">-</td><td><b>Code</b></td></tr><tr><td style="display: none">*</td><td><span title="Codes:">Net effect analysis</span></td></tr></table></blockquote></div>
  </text>
  <url value="https://fevir.net/resources/Evidence/423311"/>
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    <type>
      <coding>
        <system value="http://terminology.hl7.org/CodeSystem/v2-0203"/>
        <code value="ACSN"/>
        <display value="Accession ID"/>
      </coding>
      <text value="FEvIR Object Identifier"/>
    </type>
    <system value="https://fevir.net/FOI"/>
    <value value="423311"/>
    <assigner>
      <display value="Computable Publishing LLC"/>
    </assigner>
  </identifier>
  <identifier>
    <system value="urn:ietf:rfc:3986"/>
    <value value="urn:oid:2.16.840.1.113883.4.642.40.44.22.219"/>
  </identifier>
  <version value="1.0.0-ballot3"/>
  <name
        value="NetEffectEstimate_for_SummaryOfNetEffect_Bariatric_Surgery_Summary_of_Net_Effect_Contributions_Example_for_GIN_2022"/>
  <title
         value="NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022"/>
  <citeAs
          value="NetEffectEstimate for SummaryOfNetEffect: Bariatric Surgery Summary of Net Effect Contributions Example for GIN 2022 [Database Entry: FHIR Evidence Resource]. Contributors: Computable Publishing: Net Effect Generator, Brian S. Alper, MD, MSPH [Authors/Creators]. In: Fast Evidence Interoperability Resources (FEvIR) Platform, FOI 423311. Revised 2026-01-26. Available at: https://fevir.net/resources/Evidence/423311. Computable resource at: https://fevir.net/resources/Evidence/423311#json."/>
  <status value="active"/>
  <date value="2026-11-05T14:34:28+00:00"/>
  <author>
    <name value="Computable Publishing: Net Effect Generator"/>
  </author>
  <author>
    <name value="Brian S. Alper, MD, MSPH"/>
  </author>
  <publisher value="HL7 International / Clinical Decision Support"/>
  <contact>
    <name value="HL7 International / Clinical Decision Support"/>
    <telecom>
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      <value value="http://www.hl7.org/Special/committees/dss"/>
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  <copyright value="https://creativecommons.org/licenses/by-nc-sa/4.0/"/>
  <description
               value="This Evidence Resource is referenced in an example for the EBMonFHIR Implementation Guide."/>
  <variableDefinition>
    <description value="Adults with diabetes and obesity"/>
    <variableRole value="population"/>
    <intended>🔗 
      <reference value="Group/170443"/>
      <type value="Group"/>
      <display
               value="StudyEligibilityCriteria: Eligibility Criteria for Bariatric Surgery Randomized Trial (Diabetes Surgery Study)"/>
    </intended>
  </variableDefinition>
  <variableDefinition>
    <description
                 value="comparison groups of bariatric surgery vs. no bariatric surgery"/>
    <variableRole value="exposure"/>
    <comparatorCategory value="no bariatric surgery"/>
    <intended>🔗 
      <reference value="EvidenceVariable/172427"/>
      <type value="EvidenceVariable"/>
      <display
               value="GroupAssignment: Bariatric Surgery vs. no bariatric surgery"/>
    </intended>
  </variableDefinition>
  <variableDefinition>
    <description
                 value="composite outcome derived from NetEffectContributions"/>
    <variableRole value="outcome"/>
    <observed>🔗 
      <reference value="Group/179584"/>
      <type value="Group"/>
      <display
               value="NetEffectContributions: Bariatric Surgery Example for GIN 2022"/>
    </observed>
  </variableDefinition>
  <statistic>
    <statisticType>
      <coding>
        <system value="https://fevir.net/sevco"/>
        <code value="STATO:0000424"/>
        <display value="risk difference"/>
      </coding>
    </statisticType>
    <quantity>
      <value value="4.695"/>
    </quantity>
    <attributeEstimate>
      <type>
        <coding>
          <system value="https://fevir.net/sevco"/>
          <code value="STATO:0000196"/>
          <display value="confidence interval"/>
        </coding>
      </type>
      <level value="0.95"/>
      <range>
        <low>
          <value value="1.4049834821843223"/>
        </low>
        <high>
          <value value="7.985016517815678"/>
        </high>
      </range>
    </attributeEstimate>
    <modelCharacteristic>
      <code>
        <text value="Net effect analysis"/>
      </code>
    </modelCharacteristic>
  </statistic>
</Evidence>