This page is part of the FHIR Specification (v4.3.0: R4B - STU). The current version which supercedes this version is 5.0.0. For a full list of available versions, see the Directory of published versions . Page versions: R5 R4B
Clinical Decision Support Work Group | Maturity Level: N/A | Standards Status: Informative |
Raw XML (canonical form + also see XML Format Specification)
Definition for Code SystemEvidenceVariableHandling
<?xml version="1.0" encoding="UTF-8"?> <CodeSystem xmlns="http://hl7.org/fhir"> <id value="variable-handling"/> <meta> <lastUpdated value="2022-05-28T13:47:40.239+11:00"/> <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 http://hl7.org/fhir/variable-handling 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">continuous <a name="variable-handling-continuous"> </a> </td> <td> continuous variable</td> <td> A continuous variable is one for which, within the limits the variable ranges, any value is possible (from STATO http://purl.obolibrary.org/obo/STATO_0000251).</td> </tr> <tr> <td style="white-space:nowrap">dichotomous <a name="variable-handling-dichotomous"> </a> </td> <td> dichotomous variable</td> <td> A dichotomous variable is a categorical variable which is defined to have only 2 categories or possible values (from STATO http://purl.obolibrary.org/obo/STATO_0000090).</td> </tr> <tr> <td style="white-space:nowrap">ordinal <a name="variable-handling-ordinal"> </a> </td> <td> ordinal variable</td> <td> An ordinal variable is a categorical variable where the discrete possible values are ordered or correspond to an implicit ranking (from STATO http://purl.obolibrary.org/obo/STATO_0000228).</td> </tr> <tr> <td style="white-space:nowrap">polychotomous <a name="variable-handling-polychotomous"> </a> </td> <td> polychotomous variable</td> <td> A polychotomous variable is a categorical variable which is defined to have minimally 2 categories or possible values. (from STATO http://purl.obolibrary.org/obo/STATO_0000087). Suggestion to limit code use to situations when neither dichotomous nor ordinal variables apply.</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="5"/> </extension> <url value="http://hl7.org/fhir/variable-handling"/> <identifier> <system value="urn:ietf:rfc:3986"/> <value value="urn:oid:2.16.840.1.113883.4.642.1.0"/> </identifier> <version value="4.3.0"/> <name value="EvidenceVariableHandling"/> <title value="EvidenceVariableHandling"/> <status value="draft"/> <experimental value="false"/> <date value="2021-01-05T10:01:24+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 handling of the variable in statistical analysis for exposures or outcomes (E.g. Dichotomous, Continuous, Descriptive)."/> <caseSensitive value="true"/> <valueSet value="http://hl7.org/fhir/ValueSet/variable-handling"/> <content value="complete"/> <concept> <code value="continuous"/> <display value="continuous variable"/> <definition value="A continuous variable is one for which, within the limits the variable ranges, any value is possible (from STATO http://purl.obolibrary.org/obo/STATO_0000251)."/> </concept> <concept> <code value="dichotomous"/> <display value="dichotomous variable"/> <definition value="A dichotomous variable is a categorical variable which is defined to have only 2 categories or possible values (from STATO http://purl.obolibrary.org/obo/STATO_0000090)."/> </concept> <concept> <code value="ordinal"/> <display value="ordinal variable"/> <definition value="An ordinal variable is a categorical variable where the discrete possible values are ordered or correspond to an implicit ranking (from STATO http://purl.obolibrary.org/obo/STATO_0000228)."/> </concept> <concept> <code value="polychotomous"/> <display value="polychotomous variable"/> <definition value="A polychotomous variable is a categorical variable which is defined to have minimally 2 categories or possible values. (from STATO http://purl.obolibrary.org/obo/STATO_0000087). Suggestion to limit code use to situations when neither dichotomous nor ordinal variables apply."/> </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.