{
  "package" : "hl7.fhir.r5.core@5.0.0",
  "definition" : "A time series design which includes comparisons of observations before and after an event or exposure.",
  "system" : "http://hl7.org/fhir/study-design",
  "property" : [ {
    "_uri" : "http://hl7.org/fhir/concept-properties#parent",
    "code" : "parent",
    "_implicit" : true,
    "valueCode" : "SEVCO:01018"
  } ],
  "codesystem" : "bb32c5f8-166a-5db4-919c-9554be080f5c",
  "concept_id" : "05e10938-673f-5ccd-89a1-31dcf2b7d711",
  "ancestors" : {
    "SEVCO:01018" : 1,
    "SEVCO:01019" : 0,
    "SEVCO:01028" : 2
  },
  "id" : "116d5f57-be68-40c0-b9fa-71e3c13080dd",
  "code" : "SEVCO:01019",
  "display" : "Before and after comparison",
  "designation" : [ {
    "use" : {
      "display" : "Alternative term"
    },
    "value" : "Before and After design"
  }, {
    "use" : {
      "display" : "Alternative term"
    },
    "value" : "Pre-Post Design"
  }, {
    "use" : {
      "display" : "Alternative term"
    },
    "value" : "Before-After Comparison"
  } ],
  "version" : "5.0.0"
}