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Building-block: Number of subjects with at least one event

Source: R/building_blocks.R
n_subj_event_.Rd

Building-block: Number of subjects with at least one event

Usage

n_subj_event_(dat, intersect_index, subjectid_var)

Arguments

dat

data.table. The analysis data set.

intersect_index

A vector of intergers referencing the rows of dat that match both (1) the population to be analyzed and (2) the defenition of an event

subjectid_var

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

Value

an interger value