[R] Median and prodlim

[Ove Björ]

Dear all,

I would like to know how to calculate the median follow-up time from using 
function prodlim. By using reverse=TRUE i should get correct estimates when 
there are ties involved and I want to know how to get the median follow-up 
times from a Kaplan-meier survival function stratified by sex. In 
summary.prodlim I have to specify times, but I want to know the median 
times per sex from the median survival estimates.

prodlim(Surv(duration,status==1)~sex,reverse=TRUE)


Best regards
Ove