http://terminology.hl7.org/CodeSystem/effect-estimate-type|4.0.1

{
  "description" : "Whether the effect estimate is an absolute effect estimate (absolute difference) or a relative effect estimate (relative difference), and the specific type of effect estimate (eg relative risk or median difference).",
  "compose" : null,
  "package" : "hl7.fhir.r4.core@4.0.1",
  "date" : "2019-10-31T22:29:23Z",
  "meta" : {
    "lastUpdated" : "2019-11-01T09:29:23.356+11:00"
  },
  "publisher" : "HL7 (FHIR Project)",
  "content" : "complete",
  "name" : "EffectEstimateType",
  "experimental" : false,
  "resourceType" : "CodeSystem",
  "title" : "EffectEstimateType",
  "supliment" : null,
  "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" : 0
  } ],
  "status" : "draft",
  "id" : "0f3c2fe8-57b7-57ea-972e-4dd821632223",
  "valueSet" : "http://hl7.org/fhir/ValueSet/effect-estimate-type",
  "url" : "http://terminology.hl7.org/CodeSystem/effect-estimate-type",
  "identifier" : [ {
    "value" : "urn:oid:2.16.840.1.113883.4.642.4.1356",
    "system" : "urn:ietf:rfc:3986"
  } ],
  "concept" : [ {
    "code" : "relative-RR",
    "display" : "relative risk",
    "definition" : "relative risk (a type of relative effect estimate)."
  }, {
    "code" : "relative-OR",
    "display" : "odds ratio",
    "definition" : "odds ratio (a type of relative effect estimate)."
  }, {
    "code" : "relative-HR",
    "display" : "hazard ratio",
    "definition" : "hazard ratio (a type of relative effect estimate)."
  }, {
    "code" : "absolute-ARD",
    "display" : "absolute risk difference",
    "definition" : "absolute risk difference (a type of absolute effect estimate)."
  }, {
    "code" : "absolute-MeanDiff",
    "display" : "mean difference",
    "definition" : "mean difference (a type of absolute effect estimate)."
  }, {
    "code" : "absolute-SMD",
    "display" : "standardized mean difference",
    "definition" : "standardized mean difference (a type of absolute effect estimate)."
  }, {
    "code" : "absolute-MedianDiff",
    "display" : "median difference",
    "definition" : "median difference (a type of absolute effect estimate)."
  } ],
  "caseSensitive" : true,
  "version" : "4.0.1",
  "contact" : [ {
    "telecom" : [ {
      "value" : "http://hl7.org/fhir",
      "system" : "url"
    }, {
      "value" : "fhir@lists.hl7.org",
      "system" : "email"
    } ]
  } ]
}