Create a Subset Start Window Operator

Convenience wrapper to create a SubsetWindowOperator for defining the temporal window for a subset cohort's start date relative to the filter cohort event.

Usage

createSubsetStartWindow(
  subsetCohortWindowAnchor,
  startDays,
  endDays,
  baseCohortWindowAnchor = "cohort_start_date"
)

Arguments

subsetCohortWindowAnchor

Character. Whether to anchor to the filter cohort's 'cohort_start_date' or 'cohort_end_date'. Determines which date from the filter cohort event is used as the reference point.

startDays

Integer. The number of days from the base cohort anchor to the start of the window. Negative values indicate days before the base cohort date.

endDays

Integer. The number of days from the base cohort anchor to the end of the window. Negative values indicate days before the base cohort date.

baseCohortWindowAnchor

Character. Whether to anchor the window to the base cohort's 'cohort_start_date' or 'cohort_end_date'. Default: 'cohort_start_date'.

Value

A SubsetWindowOperator object configured for start window filtering.

Examples

# Create a start window: filter cohort must start within 365 days before to 0 days
# after the base cohort start date
start_w <- createSubsetStartWindow(
  subsetCohortWindowAnchor = "cohort_start_date",
  startDays = -365,
  endDays = 0,
  baseCohortWindowAnchor = "cohort_start_date"
)