Example CodeSystem/variable-role (XML)
Raw XML (canonical form + also see XML Format Specification)
Definition for Code SystemEvidenceVariableRole
<?xml version="1.0" encoding="UTF-8"?>
<CodeSystem xmlns="http://hl7.org/fhir">
<id value="variable-role"/>
<meta>
<lastUpdated value="2022-09-10T04:52:37.223+10:00"/>
<profile value="http://hl7.org/fhir/StructureDefinition/shareablecodesystem"/>
</meta>
<text>
<status value="generated"/>
<div xmlns="http://www.w3.org/1999/xhtml">
<p> This code system
<code> http://terminology.hl7.org/CodeSystem/variable-role</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">population
<a name="variable-role-population"> </a>
</td>
<td> population</td>
<td> variable represents a population.</td>
</tr>
<tr>
<td style="white-space:nowrap">subpopulation
<a name="variable-role-subpopulation"> </a>
</td>
<td> subpopulation</td>
<td> variable represents a subpopulation.</td>
</tr>
<tr>
<td style="white-space:nowrap">exposure
<a name="variable-role-exposure"> </a>
</td>
<td> exposure</td>
<td> variable represents an exposure.</td>
</tr>
<tr>
<td style="white-space:nowrap">referenceExposure
<a name="variable-role-referenceExposure"> </a>
</td>
<td> reference exposure</td>
<td> variable represents a reference exposure.</td>
</tr>
<tr>
<td style="white-space:nowrap">measuredVariable
<a name="variable-role-measuredVariable"> </a>
</td>
<td> measured variable</td>
<td> variable represents a measured variable.</td>
</tr>
<tr>
<td style="white-space:nowrap">confounder
<a name="variable-role-confounder"> </a>
</td>
<td> confounder</td>
<td> variable represents a confounder.</td>
</tr>
</table>
</div>
</text>
<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="trial-use"/>
</extension>
<extension url="http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm">
<valueInteger value="1"/>
</extension>
<url value="http://terminology.hl7.org/CodeSystem/variable-role"/>
<identifier>
<system value="urn:ietf:rfc:3986"/>
<value value="urn:oid:2.16.840.1.113883.4.642.4.1943"/>
</identifier>
<version value="5.0.0-ballot"/>
<name value="EvidenceVariableRole"/>
<title value="EvidenceVariableRole"/>
<status value="draft"/>
<experimental value="false"/>
<date value="2020-12-28T16:55:11+11:00"/>
<publisher value="HL7 (FHIR Project)"/>
<contact>
<telecom>
<system value="url"/>
<value value="http://hl7.org/fhir"/>
</telecom>
<telecom>
<system value="email"/>
<value value="fhir@lists.hl7.org"/>
</telecom>
</contact>
<description value="The role that the assertion variable plays."/>
<caseSensitive value="true"/>
<valueSet value="http://hl7.org/fhir/ValueSet/variable-role"/>
<content value="complete"/>
<concept>
<code value="population"/>
<display value="population"/>
<definition value="variable represents a population."/>
</concept>
<concept>
<code value="subpopulation"/>
<display value="subpopulation"/>
<definition value="variable represents a subpopulation."/>
</concept>
<concept>
<code value="exposure"/>
<display value="exposure"/>
<definition value="variable represents an exposure."/>
</concept>
<concept>
<code value="referenceExposure"/>
<display value="reference exposure"/>
<definition value="variable represents a reference exposure."/>
</concept>
<concept>
<code value="measuredVariable"/>
<display value="measured variable"/>
<definition value="variable represents a measured variable."/>
</concept>
<concept>
<code value="confounder"/>
<display value="confounder"/>
<definition value="variable represents a confounder."/>
</concept>
</CodeSystem>
Usage note: every effort has been made to ensure that the
examples are correct and useful, but they are not a normative part
of the specification.