Dataset variable definition, age_at_enrollment, is based on the profile, StudyDdVariable. Based on ObservationDefinition, the Study DD Variable describes a single variable from one of the Study’s data tables. To link the definition across various dataset components, the use of the Study’s code representation for that variable is used in the *code” property which is: age_at_enrollment in this case.

To indicate what types of data can be expected to be found, the permittedDataType is used, which in this case is set to “integer” with those ages being bound by roughly 30 and 40 years of age.

Generated Narrative: ObservationDefinition

code: Subject's Age at Enrollment in days (Datatable CodeSystem (lists all variables)#age_at_enrollment)

permittedDataType: integer

QualifiedIntervals