n_subject: Count number of unique subjects

In metalite: ADaM Metadata Structure

Count number of unique subjects

Description

Count number of unique subjects

Usage

n_subject(
  id,
  group,
  par = NULL,
  na = "Missing",
  use_na = c("ifany", "no", "always")
)

Arguments

id	A character vector of subject identifier.
group	A factor vector of group name.
par	A character vector of parameter name.
na	A character string used to label missing values. Defaults to "Missing".
use_na	A character value for whether to include NA values in the table. See the useNA argument in base::table() for more details.

Value

A data frame summarizing the number of unique subjects in different arms.

Examples

library(r2rtf)

r2rtf_adae$TRTA <- factor(r2rtf_adae$TRTA)
r2rtf_adae$SEX[1:5] <- NA

n_subject(r2rtf_adae$USUBJID, r2rtf_adae$TRTA)
n_subject(r2rtf_adae$USUBJID, r2rtf_adae$TRTA, r2rtf_adae$SEX)
n_subject(r2rtf_adae$USUBJID, r2rtf_adae$TRTA, r2rtf_adae$SEX, use_na = "always")
n_subject(r2rtf_adae$USUBJID, r2rtf_adae$TRTA, r2rtf_adae$SEX, na = "Null")

metalite documentation built on Sept. 11, 2024, 7:18 p.m.