Wrapper for Risk Difference calculation

Ensures the input to the statistical function is in the proper format, and ensures the output is formatted to the need of the AMNOG workflow.

Usage

RD(
  dat,
  event_index,
  cell_index,
  treatment_var,
  treatment_refval,
  subjectid_var,
  as_pct = TRUE,
  ...
)

Arguments

dat

data.table. The analysis data set.

event_index

vector of integers that index the rows in dat that match the definition of an 'event'. Matching is done via the INDEX_ column in dat.

cell_index

A vector of integers referencing the rows of dat (as specified by the INDEX_ column in dat) that match the population to be analyzed. See the "Endpoint Events" vignette in ramnog for more information.

treatment_var

character. The name of the treatment variable in the data.

treatment_refval

character. The reference value of the treatment variable in the data.

subjectid_var

character. Name of the subject identifier variable in the data (default is "USUBJID").

as_pct

Boolean.

...

Optional parameters.

Value

A data.table containing Risk Difference statistics.