{"caseSensitive":true,"concept":[{"code":"placebo","definition":"A sham version of the intervention.","display":"Placebo"},{"code":"absence-of-exposure","definition":"Not receiving the exposure or intervention.","display":"Absence of Exposure"},{"code":"usual-care","definition":"The typical care without the intervention under investigation.","display":"Usual Care"}],"contact":[{"telecom":[{"system":"url","value":"http://hl7.org/fhir"},{"system":"email","value":"fhir@lists.hl7.org"}]}],"content":"complete","date":"2025-10-23T16:55:11+11:00","description":"Indicates the progression of a study subject through a study.","experimental":false,"extension":[{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-wg","valueCode":"brr"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status","valueCode":"informative"},{"url":"http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm","valueInteger":0}],"id":"example-comparison-group","jurisdiction":[{"coding":[{"code":"001","display":"World","system":"http://unstats.un.org/unsd/methods/m49/m49.htm"}]}],"meta":{"lastUpdated":"2026-03-17T09:59:53.445+11:00"},"name":"ExampleComparisonGroup","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 example-comparison-group</b></p><a name=\"example-comparison-group\"> </a><a name=\"hcexample-comparison-group\"> </a><div style=\"display: inline-block; background-color: #d9e0e7; padding: 6px; margin: 4px; border: 1px solid #8da1b4; border-radius: 5px; line-height: 60%\"><p style=\"margin-bottom: 0px\">Last updated: 2025-10-23T10:01:24.148+11:00</p></div><p>This case-sensitive code system <code>http://hl7.org/fhir/example-comparison-group</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\">placebo<a name=\"example-comparison-group-placebo\"> </a></td><td>Placebo</td><td>A sham version of the intervention.</td></tr><tr><td style=\"white-space:nowrap\">absence-of-exposure<a name=\"example-comparison-group-absence-of-exposure\"> </a></td><td>Absence of Exposure</td><td>Not receiving the exposure or intervention.</td></tr><tr><td style=\"white-space:nowrap\">usual-care<a name=\"example-comparison-group-usual-care\"> </a></td><td>Usual Care</td><td>The typical care without the intervention under investigation.</td></tr></table></div>","status":"generated"},"title":"Example Comparison Group","url":"http://hl7.org/fhir/example-comparison-group","valueSet":"http://hl7.org/fhir/ValueSet/example-comparison-group","version":"6.0.0-ballot4"}