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Building-block: Number of subjects

Source: R/building_blocks.R
n_subj_.Rd

Building-block: Number of subjects

Usage

n_subj_(dat, cell_index, subjectid_var)

Arguments

dat

data.table. The analysis data set.

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.

subjectid_var

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

Value

An integer