This is the Continuous Integration Build of FHIR (will be incorrect/inconsistent at times).
See the Directory of published versions icon CodeSystem http://hl7.org/fhir/variable-role

Clinical Decision Support icon Work Group Maturity Level: 1Trial Use Use Context: Country: World
Official URL: http://hl7.org/fhir/variable-role Version: 6.0.0-cibuild
active as of 2023-11-08 Computable Name: Variable Role
Flags: CaseSensitive, Complete. All codes ValueSet: Evidence Variable Role OID: TBD

This Code system is used in the following value sets:

The role that the variable plays.

This case-sensitive code system http://hl7.org/fhir/variable-role defines the following codes:

population PopulationThe group from which the observations were obtained.btn btn
exposure ExposureAn independant variable of primary interest.btn btn
outcome OutcomeA dependent variable.btn btn
covariate CovariateA variable that influences the exposure or outcome.btn btn


See the full registry of code systems defined as part of FHIR.

Explanation of the columns that may appear on this page:

LevelA few code lists that FHIR defines are hierarchical - each code is assigned a level. See Code System for further information.
SourceThe source of the definition of the code (when the value set draws in codes defined elsewhere)
CodeThe code (used as the code in the resource instance). If the code is in italics, this indicates that the code is not selectable ('Abstract')
DisplayThe 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
DefinitionAn explanation of the meaning of the concept
CommentsAdditional notes about how to use the code