R help - Sep 2005 - (survexp:) compute the expected remaining survival time

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


Thanks
--
Anne

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