{"caseSensitive":true,"concept":[{"code":"systematic-assessment","definition":"Any method of routinely determining whether or not specific outcomes (e.g. adverse events) have occurred, for example through a standard questionnaire, regular investigator assessment, regular laboratory testing, or other method","display":"Systematic Assessment"},{"code":"non-systematic-assessment","definition":"Any non-systematic method for determining whether or not adverse events have occurred, such as self-reporting by participants or occasional assessment/testing","display":"Non-Systematic Assessment"},{"code":"mean","definition":"Aggregated using mean of observed values.","display":"Mean"},{"code":"median","definition":"Aggregated using median of observed values.","display":"Median"},{"code":"mean-of-mean","definition":"Aggregated using mean of means (e.g. study mean values).","display":"Mean of Means"},{"code":"mean-of-median","definition":"Aggregated using mean of medians (e.g. study median values).","display":"Mean of Medians"},{"code":"median-of-mean","definition":"Aggregated using median of means (e.g. study mean values).","display":"Median of Means"},{"code":"median-of-median","definition":"Aggregated using median of medians (e.g. study median values).","display":"Median of Medians"}],"contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"},{"system":"email","value":"fhir@lists.hl7.org"}]}],"content":"complete","date":"2020-12-28T16:55:11+11:00","description":"The method used to define, describe, or determine a characteristic value.","experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"fhir"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"informative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm","valueInteger":1}],"id":"definition-method","identifier":[{"system":"urn:ietf:rfc:3986","value":"urn:oid:2.16.840.1.113883.4.642.4.1953"}],"jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-04-01T17:59:15.240+00:00"},"name":"DefinitionMethod","publisher":"HL7 (FHIR Project)","resourceType":"CodeSystem","status":"active","text":{"div":"<div xmlns=\"http://www.w3.org/1999/xhtml\"><p class=\"res-header-id\"><b>Generated Narrative: CodeSystem definition-method</b></p><a name=\"definition-method\"> </a><a name=\"hcdefinition-method\"> </a><p>This case-sensitive code system <code>http://hl7.org/fhir/definition-method</code> defines the following codes:</p><table class=\"codes\"><tr><td style=\"white-space:nowrap\"><b>Code</b></td><td><b>Display</b></td><td><b>Definition</b></td></tr><tr><td style=\"white-space:nowrap\">systematic-assessment<a name=\"definition-method-systematic-assessment\"> </a></td><td>Systematic Assessment</td><td>Any method of routinely determining whether or not specific outcomes (e.g. adverse events) have occurred, for example through a standard questionnaire, regular investigator assessment, regular laboratory testing, or other method</td></tr><tr><td style=\"white-space:nowrap\">non-systematic-assessment<a name=\"definition-method-non-systematic-assessment\"> </a></td><td>Non-Systematic Assessment</td><td>Any non-systematic method for determining whether or not adverse events have occurred, such as self-reporting by participants or occasional assessment/testing</td></tr><tr><td style=\"white-space:nowrap\">mean<a name=\"definition-method-mean\"> </a></td><td>Mean</td><td>Aggregated using mean of observed values.</td></tr><tr><td style=\"white-space:nowrap\">median<a name=\"definition-method-median\"> </a></td><td>Median</td><td>Aggregated using median of observed values.</td></tr><tr><td style=\"white-space:nowrap\">mean-of-mean<a name=\"definition-method-mean-of-mean\"> </a></td><td>Mean of Means</td><td>Aggregated using mean of means (e.g. study mean values).</td></tr><tr><td style=\"white-space:nowrap\">mean-of-median<a name=\"definition-method-mean-of-median\"> </a></td><td>Mean of Medians</td><td>Aggregated using mean of medians (e.g. study median values).</td></tr><tr><td style=\"white-space:nowrap\">median-of-mean<a name=\"definition-method-median-of-mean\"> </a></td><td>Median of Means</td><td>Aggregated using median of means (e.g. study mean values).</td></tr><tr><td style=\"white-space:nowrap\">median-of-median<a name=\"definition-method-median-of-median\"> </a></td><td>Median of Medians</td><td>Aggregated using median of medians (e.g. study median values).</td></tr></table></div>","status":"generated"},"title":"Definition Method","url":"http://hl7.org/fhir/definition-method","valueSet":"http://hl7.org/fhir/ValueSet/definition-method","version":"6.0.0-ballot4"}