EvidenceVariableType

The possible types of variables for exposures or outcomes (E.g. Dichotomous, Continuous, Descriptive).

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

Code Display Definition
dichotomous Dichotomous The variable is dichotomous, such as present or absent.
continuous Continuous The variable is a continuous result such as a quantity.
descriptive Descriptive The variable is described narratively rather than quantitatively.
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