Hi everyone!! I have dataset composed of a numbers of survival analyses. ( for batch survival analyses by using for-loop) . Here are code !!
####### dim(svsv) Num_t<-dim(svsv) Num<-Num_t[2] # These are predictors !! names=colnames(svsv) for (i in 1:Num ) { name_tt=names[i] survdiff(Surv(survival.m, survival) ~ names[i], data=svsv) fit.Group<-survfit(Surv(survival.m, survival) ~ names[i] , data=svsv) plot(fit.Group, col=2:1, xlab="Survival", ylab="Prob") } ##### names[i] is not working in the survdiff. According to help R , the predictor must be single subset. And, names[i] is also single character, I think. But, it do NOT work. How I can solve this problem ? Thank you. -- View this message in context: http://r.789695.n4.nabble.com/Question-about-survdiff-in-for-loop-tp4646707.html Sent from the R help mailing list archive at Nabble.com. ______________________________________________ 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.