description: Profile of Evidence for Evidence Based Medicine IG. The ComparativeEvidence Profile is used for evidence with a measured variable that is considered the outcome of an exposure or intervention, and an exposure variable with two or more categories that are being compared.
package_name: hl7.fhir.uv.ebm
derivation: constraint
name: ComparativeEvidence
type: Evidence
elements:
  variableDefinition:
    array: true
    min: 3
    index: 0
    slicing:
      rules: open
      discriminator:
      - {path: note.text, type: value}
      min: 3
      slices:
        population:
          match:
            note: {text: population}
          schema:
            array: true
            min: 1
            _required: true
            index: 1
            extensions:
              variableRoleCode:
                url: null
                index: 2
                elements:
                  value:
                    pattern: {type: Code, value: population}
                    choices: []
                    index: 4
              roleSubtype: {url: null, index: 5}
              comparatorCategory: {url: null, index: 6}
            elements:
              extension:
                index: 2
                slicing:
                  slices:
                    variableRoleCode:
                      match: {}
                      schema:
                        index: 2
                        elements:
                          value:
                            pattern: {type: Code, value: population}
                            choices: []
                            index: 4
                    roleSubtype:
                      match: {}
                      schema: {index: 5}
                    comparatorCategory:
                      match: {}
                      schema: {index: 6}
              note:
                elements:
                  text:
                    pattern: {type: Markdown, value: population}
                    index: 7
              observed:
                type: Reference
                refers: ['http://hl7.org/fhir/uv/ebm/StructureDefinition/comparator-group', 'http://hl7.org/fhir/uv/ebm/StructureDefinition/exposure-group', 'http://hl7.org/fhir/uv/ebm/StructureDefinition/metaanalysis-study-group', 'http://hl7.org/fhir/uv/ebm/StructureDefinition/study-group']
                index: 8
              intended:
                type: Reference
                refers: ['http://hl7.org/fhir/StructureDefinition/Group']
                index: 9
        exposure:
          match:
            note: {text: exposure}
          schema:
            _required: true
            index: 10
            extensions:
              variableRoleCode:
                url: null
                index: 12
                elements:
                  value:
                    pattern: {type: Code, value: exposure}
                    choices: []
                    index: 14
              roleSubtype: {url: null, index: 15}
              comparatorCategory: {url: null, min: 1, _required: true, index: 16}
            elements:
              extension:
                array: true
                min: 2
                index: 11
                slicing:
                  slices:
                    variableRoleCode:
                      match: {}
                      schema:
                        index: 12
                        elements:
                          value:
                            pattern: {type: Code, value: exposure}
                            choices: []
                            index: 14
                    roleSubtype:
                      match: {}
                      schema: {index: 15}
                    comparatorCategory:
                      match: {}
                      schema: {_required: true, index: 16}
                      min: 1
              note:
                elements:
                  text:
                    pattern: {type: Markdown, value: exposure}
                    index: 17
              observed:
                type: Reference
                refers: ['http://hl7.org/fhir/uv/ebm/StructureDefinition/group-assignment']
                index: 18
              intended:
                type: Reference
                refers: ['http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition']
                index: 19
        outcome:
          match:
            note: {text: outcome}
          schema:
            mustSupport: true
            array: true
            min: 1
            _required: true
            index: 20
            extensions:
              variableRoleCode:
                url: null
                index: 21
                elements:
                  value:
                    pattern: {type: Code, value: outcome}
                    choices: []
                    index: 23
              roleSubtype: {url: null, index: 24}
              comparatorCategory: {url: null, max: 0, index: 25}
            elements:
              extension:
                index: 21
                slicing:
                  slices:
                    variableRoleCode:
                      match: {}
                      schema:
                        index: 21
                        elements:
                          value:
                            pattern: {type: Code, value: outcome}
                            choices: []
                            index: 23
                    roleSubtype:
                      match: {}
                      schema: {index: 24}
                    comparatorCategory:
                      match: {}
                      schema: {index: 25}
                      max: 0
              note:
                elements:
                  text:
                    pattern: {type: Markdown, value: outcome}
                    index: 26
              observed:
                type: Reference
                refers: ['http://hl7.org/fhir/uv/ebm/StructureDefinition/variable-definition']
                index: 27
              intended:
                type: Reference
                refers: ['http://hl7.org/fhir/StructureDefinition/EvidenceVariable']
                index: 28
package_version: 1.0.0-ballot
class: profile
kind: resource
url: http://hl7.org/fhir/uv/ebm/StructureDefinition/comparative-evidence
base: http://hl7.org/fhir/uv/ebm/StructureDefinition/evidence-r6
version: 1.0.0-ballot