This page is part of the FHIR Specification v6.0.0-ballot1: Release 6 Ballot (1st Draft) (see Ballot Notes). The current version is 5.0.0.  For a full list of available versions, see the Directory of published versions 
| Clinical Decision Support  Work Group | Maturity Level: 1 | Trial Use | Use Context: Country: World, Not yet ready for Production use | 
| Official URL: http://hl7.org/fhir/ValueSet/variable-role-subtype | Version: 6.0.0-ballot1 | |||
| draft as of 2020-12-28 | Computable Name: EvidenceVariableRoleSubtype | |||
| Flags: Experimental, Immutable | OID: | |||
This value set is used in the following places:
The sub-role that the variable plays.
http://terminology.hl7.org/CodeSystem/variable-role 
This expansion generated 18 Dec 2023
Expansion based on codesystem EvidenceVariableRole v1.0.0 (CodeSystem) 
This value set contains 6 concepts
| Code | System | Display | Definition | 
| population  | http://terminology.hl7.org/CodeSystem/variable-role | population | variable represents a population. | 
| subpopulation  | http://terminology.hl7.org/CodeSystem/variable-role | subpopulation | variable represents a subpopulation. | 
| exposure  | http://terminology.hl7.org/CodeSystem/variable-role | exposure | variable represents an exposure. | 
| referenceExposure  | http://terminology.hl7.org/CodeSystem/variable-role | reference exposure | variable represents a reference exposure. | 
| measuredVariable  | http://terminology.hl7.org/CodeSystem/variable-role | measured variable | variable represents a measured variable. | 
| confounder  | http://terminology.hl7.org/CodeSystem/variable-role | confounder | variable represents a confounder. | 
See the full registry of value sets defined as part of FHIR.
Explanation of the columns that may appear on this page:
| Lvl | A few code lists that FHIR defines are hierarchical - each code is assigned a level. For value sets, levels are mostly used to organize codes for user convenience, but may follow code system hierarchy - see Code System for further information | 
| Source | The source of the definition of the code (when the value set draws in codes defined elsewhere) | 
| Code | The code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract') | 
| Display | The display (used in the display element of a Coding). If there is no display, implementers should not simply display the code, but map the concept into their application | 
| Definition | An explanation of the meaning of the concept | 
| Comments | Additional notes about how to use the code |