description: 'R5: `EvidenceVariable.characteristic.definitionReference` (new:Reference(EvidenceVariable,Group,Evidence))'
package_name: hl7.fhir.uv.xver-r5.r4b
derivation: constraint
name: ExtensionEvidenceVariable_Characteristic_DefinitionReference
type: Extension
elements:
  url:
    base: {max: '1', min: 1, path: Extension.url}
    pattern: {type: Uri, value: 'http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionReference'}
    index: 0
  value:
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    short: Defines the characteristic (without using type and value) by a Reference
    choices: [valueReference]
    index: 2
  valueReference:
    short: Defines the characteristic (without using type and value) by a Reference
    refers: ['http://hl7.org/fhir/5.0/StructureDefinition/profile-EvidenceVariable|0.1.0', 'http://hl7.org/fhir/5.0/StructureDefinition/profile-Evidence|0.1.0', 'http://hl7.org/fhir/5.0/StructureDefinition/profile-Group|0.1.0', 'http://hl7.org/fhir/StructureDefinition/EvidenceVariable|4.3.0', 'http://hl7.org/fhir/StructureDefinition/Evidence|4.3.0', 'http://hl7.org/fhir/StructureDefinition/Group|4.3.0']
    type: Reference
    base: {max: '1', min: 0, path: 'Extension.value[x]'}
    choiceOf: value
    index: 3
package_version: 0.1.0
class: extension
kind: complex-type
url: http://hl7.org/fhir/5.0/StructureDefinition/extension-EvidenceVariable.characteristic.definitionReference
base: http://hl7.org/fhir/StructureDefinition/Extension|4.3.0
version: 0.1.0
required: [url]