bootstrap_survival: Bootstrap pointwise confidence bands for a mean survival...

In ggRandomForests: Visually Exploring Random Forests

Bootstrap pointwise confidence bands for a mean survival curve

Description

Draws bs_samples bootstrap resamples (with replacement) of the per-observation survival curves stored in gg_dta, computes the column means to obtain a bootstrapped mean curve per resample, then returns the pointwise quantiles at level_set and the overall mean across resamples.

Usage

bootstrap_survival(gg_dta, bs_samples, level_set)

Arguments

gg_dta	A wide data.frame of survival probabilities as returned by the survival branch of gg_rfsrc.rfsrc, before the optional pivot to long form. Columns obs_id, event, and group (if present) are excluded from the resampling.
bs_samples	Integer; number of bootstrap resamples.
level_set	Numeric vector of length 2 giving the lower and upper quantile probabilities for the confidence band (e.g. c(0.025, 0.975) for a 95% CI).

Value

A data.frame with one row per unique event time and columns value (time), lower, upper, median, and mean.

ggRandomForests documentation built on May 2, 2026, 5:06 p.m.