add_n.tbl_survfit: Add N

In gtsummary: Presentation-Ready Data Summary and Analytic Result Tables

Add N

Description

For each survfit() object summarized with tbl_survfit() this function will add the total number of observations in a new column.

Usage

## S3 method for class 'tbl_survfit'
add_n(x, ...)

Arguments

x	object of class "tbl_survfit"
...	Not used

Examples

library(survival)
fit1 <- survfit(Surv(ttdeath, death) ~ 1, trial)
fit2 <- survfit(Surv(ttdeath, death) ~ trt, trial)

# Example 1 ----------------------------------
list(fit1, fit2) |>
  tbl_survfit(times = c(12, 24)) |>
  add_n()

gtsummary documentation built on April 3, 2025, 10:18 p.m.