SurvLR {interval}

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

See Also

Called from icfit and ictest

Examples

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