To add a new column with the exposed time. To add multiple columns use addDrugUtilisation() for efficiency.

To add a new column with the exposed time. To add multiple columns use addDrugUtilisation() for efficiency.

Usage

addExposedTime(
  cohort,
  conceptSet,
  gapEra,
  indexDate = "cohort_start_date",
  censorDate = "cohort_end_date",
  restrictIncident = TRUE,
  nameStyle = "days_exposed_{concept_name}",
  name = NULL
)

Arguments

cohort

A cohort_table object.

conceptSet

List of concepts to be included.

gapEra

Number of days between two continuous exposures to be considered in the same era.

indexDate

Name of a column that indicates the date to start the analysis.

censorDate

Name of a column that indicates the date to stop the analysis, if NULL end of individuals observation is used.

restrictIncident

Whether to include only incident prescriptions in the analysis. If FALSE all prescriptions that overlap with the study period will be included.

nameStyle

Character string to specify the nameStyle of the new columns.

name

Name of the new computed cohort table, if NULL a temporary table will be created.

Value

The same cohort with the added column.