description: The quality of the evidence described. The code system used specifies the quality scale used to grade this evidence source while the code specifies the actual quality score (represented as a coded value) associated with the evidence. package_name: rs/hl7.fhir.core derivation: constraint name: qualityOfEvidence type: Extension elements: extension: {index: 0} url: type: uri pattern: {type: uri, value: 'http://hl7.org/fhir/StructureDefinition/cqf-qualityOfEvidence'} index: 1 valueCodeableConcept: type: CodeableConcept binding: {strength: example, valueSet: 'http://hl7.org/fhir/ValueSet/evidence-quality', bindingName: QualityOfEvidenceRating} index: 2 package_version: 3.5.0 extensions: {} class: extension kind: complex-type url: http://hl7.org/fhir/StructureDefinition/cqf-qualityOfEvidence base: http://hl7.org/fhir/StructureDefinition/Extension version: null