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Source1

{
  "resourceType": "CodeSystem",
  "id": "variable-handling",
  "text": {
    "status": "generated",
    "div": "<!-- snip (see above) -->"
  },
  "extension": [
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-standards-status",
      "valueCode": "trial-use"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-fmm",
      "valueInteger": 5
    },
    {
      "extension": [
        {
          "url": "packageId",
          "valueId": "hl7.fhir.uv.xver-r5.r4b"
        },
        {
          "url": "version",
          "valueString": "0.0.1-snapshot-2"
        }
      ],
      "url": "http://hl7.org/fhir/StructureDefinition/package-source"
    },
    {
      "url": "http://hl7.org/fhir/StructureDefinition/structuredefinition-wg",
      "valueCode": "cds"
    }
  ],
  "url": "http://hl7.org/fhir/variable-handling",
  "version": "5.0.0",
  "name": "EvidenceVariableHandling",
  "title": "Evidence Variable Handling",
  "status": "active",
  "experimental": false,
  "date": "2021-01-05T09:01:24+10:00",
  "publisher": "Clinical Decision Support",
  "contact": [
    {
      "name": "Clinical Decision Support",
      "telecom": [
        {
          "system": "url",
          "value": "http://www.hl7.org/Special/committees/dss"
        }
      ]
    }
  ],
  "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|4.3.0",
  "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."
    }
  ]
}