Definition for Code SystemEvidenceVariableHandling
{
"resourceType" : "CodeSystem",
"id" : "variable-handling",
"meta" : {
"lastUpdated" : "2023-03-01T23:03:57.298+11:00",
"profile" : ["http://hl7.org/fhir/StructureDefinition/shareablecodesystem"]
},
"text" : {
"status" : "generated",
"div" : "<div xmlns=\"http://www.w3.org/1999/xhtml\"><p>This code system <code>http://hl7.org/fhir/variable-handling</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\">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>"
},
"extension" : [{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
"valueCode" : "cds"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
"valueCode" : "trial-use"
},
{
"url" : "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
"valueInteger" : 5
}],
"url" : "http://hl7.org/fhir/variable-handling",
"identifier" : [{
"system" : "urn:ietf:rfc:3986",
"value" : "urn:oid:2.16.840.1.113883.4.642.4.1956"
}],
"version" : "5.0.0-draft-final",
"name" : "EvidenceVariableHandling",
"title" : "Evidence Variable Handling",
"status" : "active",
"experimental" : false,
"date" : "2021-01-05T10:01:24+11:00",
"publisher" : "HL7 (FHIR Project)",
"contact" : [{
"telecom" : [{
"system" : "url",
"value" : "http://hl7.org/fhir"
},
{
"system" : "email",
"value" : "fhir@lists.hl7.org"
}]
}],
"description" : "The handling of the variable in statistical analysis for exposures or outcomes (E.g. Dichotomous, Continuous, Descriptive).",
"jurisdiction" : [{
"coding" : [{
"system" : "http://unstats.un.org/unsd/methods/m49/m49.htm",
"code" : "001",
"display" : "World"
}]
}],
"caseSensitive" : true,
"valueSet" : "http://hl7.org/fhir/ValueSet/variable-handling",
"content" : "complete",
"concept" : [{
"code" : "continuous",
"display" : "continuous variable",
"definition" : "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)."
},
{
"code" : "dichotomous",
"display" : "dichotomous variable",
"definition" : "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)."
},
{
"code" : "ordinal",
"display" : "ordinal variable",
"definition" : "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)."
},
{
"code" : "polychotomous",
"display" : "polychotomous variable",
"definition" : "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."
}]
}
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.