Union of http://terminology.hl7.org/CodeSystem/variable-role and http://terminology.hl7.org/CodeSystem/variable-role

This is the CodeSystem that contains all the codes in EvidenceVariableRole (http://terminology.hl7.org/CodeSystem/variable-role) and EvidenceVariableRole (http://terminology.hl7.org/CodeSystem/variable-role). E.g. what you have to deal with if you get resources containing codes in either of them

CodeSystem

Generated Narrative: CodeSystem a5f384d8-a316-4736-ae90-ae021409e6cf-3584

This code system http://hl7.org/fhir/comparison/CodeSystem/a5f384d8-a316-4736-ae90-ae021409e6cf-3584 defines codes, but no codes are represented here

CodeDisplayDefinition
population populationvariable represents a population.
subpopulation subpopulationvariable represents a subpopulation.
exposure exposurevariable represents an exposure.
referenceExposure reference exposurevariable represents a reference exposure.
measuredVariable measured variablevariable represents a measured variable.
confounder confoundervariable represents a confounder.
measuredVariableA measured variable Avariable represents a first of two measured variables to be used in a measured variable that is a mathematical operation of two measured variables.
measuredVariableB measured variable Bvariable represents a second of two measured variables to be used in a measured variable that is a mathematical operation of two measured variables.
measuredVariableAB measured variable A to Bvariable represents a result of a mathematical operation of two measured variables.