> Should the following syntax work getting the expected number of > deaths? I am > having no luck getting the thing to work.
> pyears(Surv(fu,ev)~ratetable(sex=sex, age=age,year=yearofsurgery), > ratetable=expsurv.us, scale=365.25)$expected Your syntax is fine. It looks like you built your own rate table, and I'm guessing that something was done incorrectly at that step. The dimensions etc are fussy for a rate table, and it is easy to get them wrong. Terry Therneau ______________________________________________ R-help@r-project.org mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide http://www.R-project.org/posting-guide.html and provide commented, minimal, self-contained, reproducible code.