surv_search: Survival estimate at selected times

In survrec: Survival Analysis for Recurrent Event Data

Survival estimate at selected times

Description

Evaluates a step survival function at arbitrary times. The estimate is a decreasing piecewise-constant function with jumps at the event times, so the value at any time is the one of the previous event time.

Usage

surv_search(tvals, time, surv)

Arguments

tvals	vector of times at which the survival function is evaluated.
time	vector of ordered distinct event times.
surv	vector of survival estimates at each event time.

Value

The survival estimate at each of the tvals times.

Examples

time <- c(4, 7, 9, 15, 21, 67)
surv <- c(0.8, 0.7, 0.65, 0.55, 0.43, 0.22)

# survival at times 1, 10, 32 and 74
surv_search(c(1, 10, 32, 74), time, surv)

survrec documentation built on Sept. 22, 2026, 9:07 a.m.