description: Reference to a CodeableConcept and/or a Group Resource to express a definition for an EvidenceVariable.
package_name: hl7.fhir.uv.ebm
derivation: constraint
name: EvidenceVariableDefinition
type: Extension
elements:
  extension: {index: 0}
  url:
    pattern: {type: Uri, value: 'http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-definition'}
    index: 1
  value:
    choices: [valueCodeableReference]
    index: 3
  valueCodeableReference: {type: CodeableReference, choiceOf: value, index: 4}
package_version: 1.0.0-ballot
extensions: {}
class: extension
kind: complex-type
url: http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-variable-definition
base: http://hl7.org/fhir/StructureDefinition/Extension
version: 1.0.0-ballot