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: de.netzwerk-universitaetsmedizin.ebm-cpg derivation: constraint name: QualityOfEvidence type: Extension elements: extension: {index: 0} url: pattern: {type: Uri, value: 'https://www.netzwerk-universitaetsmedizin.de/fhir/cpg-on-ebm-on-fhir/StructureDefinition/cqf-qualityOfEvidence'} index: 1 value: choices: [valueCodeableConcept] index: 3 valueCodeableConcept: {type: CodeableConcept, choiceOf: value, index: 4} package_version: 0.7.1-snapshot extensions: {} class: extension kind: complex-type url: https://www.netzwerk-universitaetsmedizin.de/fhir/cpg-on-ebm-on-fhir/StructureDefinition/cqf-qualityOfEvidence base: http://hl7.org/fhir/StructureDefinition/Extension version: 4.3.0 required: [value, valueCodeableConcept]