[R] (survexp:) compute the expected remaining survival time

[Thomas Lumley]

On Thu, 22 Sep 2005, Anne wrote:

> DeaR list
> I would like to know if there is a direct method  to compute  the
> expected remaining survival time for a subject having survived up to
> time t. survexp gives me the probabilty for subject S to survive up to
> day D

You can't estimate expected survival times.  You could estimate  the 
probability of surviving to day D given survival to day t: just divide the 
probability of surviving to day D by the probability of surviving to day 
t.

 	-thomas