Get Treatment Group Counts

Extract or compute treatment group counts from ADaMData or data frame.

Usage

get_trt_n(data, trt_var = "TRT01P", population = NULL, subject_var = "USUBJID")

Arguments

data

ADaMData object or data frame

trt_var

Treatment variable name (used only for data frames, ignored for ADaMData which uses its own trt_var)

population

Population to filter by (used only for data frames, filters by {population}FL == "Y")

subject_var

Subject ID variable (used only for data frames)

Value

Data frame with treatment variable and N column

Examples

if (FALSE) { # \dontrun{
# From ADaMData - uses stored trt_var and population
adam <- ADaMData(data = adsl, domain = "ADSL", population = "FAS")
trt_n <- get_trt_n(adam)

# From data frame - must specify parameters
trt_n <- get_trt_n(adsl, trt_var = "TRT01P", population = "SAF")
} # }