description: Inclusion and exclusion criteria for the comparison group.
package_name: hl7.fhir.uv.ebm
derivation: constraint
name: ResearchStudyComparisonGroupEligibility
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/ebm/StructureDefinition/research-study-comparison-group-eligibility'}
    index: 1
  value:
    choices: [valueReference]
    index: 3
  valueReference:
    type: Reference
    choiceOf: value
    refers: ['http://hl7.org/fhir/StructureDefinition/Group']
    index: 4
package_version: 1.0.0-ballot2
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/ebm/StructureDefinition/research-study-comparison-group-eligibility
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0-ballot2