assessSurvTime: Assess survival time

In TalhoukLab/biostatUtil: Utility Functions Used in Biostatistics Projects

Assess survival time

Description

Given range of survival times and censoring status, provides different time-related summary statistics

Usage

assessSurvTime(T1, T2, status)

Arguments

T1	vector of start dates
T2	vector of end dates
status	logical;

Details

The observation time is defined as the median time in days between all T1 and T2. Censoring time is the median time in days between all T1 and T2 for events only.

Value

A list with elements

Otime	Observation time
Stime	Censoring time
Etime	Time to end of study
KFT	Known Function Time
RevKM	Reverse Kaplan-Meier Time

Author(s)

Samuel Leung

Examples

set.seed(3)
starts <- seq(as.Date("2000/1/1"), as.Date("2003/1/1"), by = "quarter")
ends <-  seq(as.Date("2003/1/1"), as.Date("2006/1/1"), by = "quarter")
statuses <- sample(0:1, 13, replace = TRUE)
assessSurvTime(starts, ends, statuses)

TalhoukLab/biostatUtil documentation built on April 14, 2025, 4:15 a.m.