interval: SurvLR – R documentation

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SurvLR

Transform Surv object to data frame with L and R values

Description

Takes a Surv object and transforms it into a data frame with two variables, L and R, representing the left and right interval of interval censored data. The failure time is known to be in the interval (L,R]. Right censored data are handled by setting L=R for observed and R=Inf for right censored. These are interpreted correctly by icfit and ictest.

Usage

SurvLR(x)

Arguments

`x`	a `Surv` object

Details

Currently type='counting' not supported.

Value

A data frame with two variables:

`L`	left end of interval
`R`	right end of interval

Examples

time<-c(1,5,3,7)
status<-c(1,1,0,1)
y<-Surv(time,status)
SurvLR(y)

interval

Weighted Logrank Tests and NPMLE for Interval Censored Data

v1.1-0.7

GPL (>= 2)

Authors

Michael P. Fay

Initial release

2020-09-23