{
  "package" : "hl7.fhir.r5.core@5.0.0",
  "definition" : "A comparative study design in which participants are allocated to exposures (interventions) by their membership in groups (called clusters) rather than by individualized assignments.",
  "system" : "http://hl7.org/fhir/study-design",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "SEVCO:01010"
  } ],
  "codesystem" : "bb32c5f8-166a-5db4-919c-9554be080f5c",
  "concept_id" : "6d6b45c8-ad64-53f4-8c6c-f5111eb3934e",
  "ancestors" : {
    "SEVCO:01010" : 1,
    "SEVCO:01015" : 0
  },
  "id" : "0bcfe1e9-2347-4399-9e1b-9d469dfc26f5",
  "code" : "SEVCO:01015",
  "display" : "Cluster as unit of allocation",
  "designation" : [ {
    "use" : {
      "display" : "Alternative term"
    },
    "value" : "Clustering for comparison"
  } ],
  "version" : "5.0.0"
}