Dear useRs, What is the syntax to obtain survival curves for single strata on many subjects?
I have a model based on Surv(time,response) object, so there is a single row per subject and no start,stop and no switching of strata. The newdata has many subjects and each subject has a strata and the survival based on the subject risk and the subject strata is needed. If I do newpred <- survfit(cph.approve,new=newapp,se=F) I get all strata for every subject. Attempting > newpred <- survfit(cph.approve,new=newapp,id=CertId,se=F) Error in survfit.coxph(cph.approve, new = newapp, id = CertId, se = F) : The individual option is only valid for start-stop data > newpred <- survfit(cph.approve,new=newapp,indi=T,se=F) Error in survfit.coxph(cph.approve, new = newapp, indi = T, se = F) : The individual option is only valid for start-stop data Please, advise if obtaining a single strata for a basic (time,response) model is possible? Due to differing lengths of the surv for different strata this will not go in a "wide" data.frame without padding. Thanks everybody and have a great day. Stephen B ______________________________________________ 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.
