> Can anyone tell me what is the difference between these two standard > errors and how should I interpret the confidence intervals and std.err > given these differences?
help(survfit.object) will give you the answer. The std in the object is for the cumulative hazard, the printout uses a Taylor series argument to compute the se of the survival. (The are several reasons for this choice, including that se(survival) is not well defined by the standard formulas when S=0). 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.
