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  1. FHIR Specification Feedback
  2. FHIR-26455

Simplify and make Evidence resource more clear

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    Details

    • Type: Change Request
    • Status: Resolved - change required (View Workflow)
    • Priority: Medium
    • Resolution: Persuasive
    • Specification:
      FHIR Core (FHIR)
    • Raised in Version:
      R5
    • Work Group:
      Clinical Decision Support
    • Related Artifact(s):
      Evidence
    • Related Section(s):
      Resource Content
    • Resolution Description:
      Hide

      Agreed, make changes to the Evidence resource as proposed.

      Show
      Agreed, make changes to the Evidence resource as proposed.
    • Resolution Vote:
      Brian Alper/Khalid Shahin: 12-0-0
    • Change Category:
      Enhancement
    • Change Impact:
      Non-compatible

      Description

      We want to consolidate referentGroup and variableDefinition into one backbone element, and make other changes to make the Evidence resource easier to understand and use. To refer to a group (population) in an Evidence resource we want to use the variableDefinition backbone element instead of referentGroup, and referentGroup can be deleted.

      Proposed changes to the Evidence Resource structure:

      1. Add “population” and “subpopulation” to the variable-role Value Set used by “variableDefintion.variableRole”
      2. Change the variableDefinition.actualDefinition datatype from “Reference(EvidenceVariable)” to “Reference(Group | EvidenceVariable)”
      3. Change the “variableDefinition.intendedDefinition” datatype from “Reference(EvidenceVariable)” to “Reference(Group | EvidenceVariable)”
      4. Delete the “referentGroup” backbone element from the Evidence resource, and all the elements within it will be removed as well.
      5. Rename “variableDefinition.actualDefinition” to “variableDefinition.observed”
      6. Rename “variableDefinition.intendedDefinition” to “variableDefinition.intended”
      7. The cardinality of the “variableDefinition” will change from 0..* to 1..*
      8. The cardinality of “variableDefintion.variableRole” will change from 0..1 to 1..1, so it will be known what resource “observed” and “intended” will be referencing.
      9. We will update all the Evidence resource examples within the FHIR build to match the changes to the resource.

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              Assignee:
              Unassigned
              Reporter:
              khalid_shahin Khalid Shahin
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                Updated:
                Resolved:
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