You will have to be more clear about what exactly you are trying to do.
I, at least, am quite unsure about what you want.
fit <- coxph(Surv(time, status) ~ x1 + strata(x2))
The hazard ratio(s) wrt x1 have the same meaning for a stratified or an
unstratified model. If you are asking about hazard ratios for x2 --- there
are
none. That is the point of a strata; you are declaring a variable to NOT be
proportional hazards, and thus there is no single "hazard ratio" that describes
it.
Terry Therneau
______________________________________________
R-help@stat.math.ethz.ch 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.
