Thanks very much, Bernhard and Terry. It clarify my confusion and really helps a lot.
Regards Jeff Xu Terry Therneau wrote: > >> plot(survfit(fit)) should plot the survival-function for x=0 or >> equivalently beta'=0. This curve is independent of any covariates. > > This is not correct. It plots the curve for a hypothetical subject with > x= > mean of each covariate. > This is NOT the "average survival" of the data set. Imagine a cohort > made up > of 60 year old men and their 10 year old grandsons: the expected survival > of > this cohort does not look that for a 35 year old male. > > Terry T > > ______________________________________________ > 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. > > -- View this message in context: http://www.nabble.com/survival%3A%3Asurvfit%2Cplot.survfit-tp22206954p22227647.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.
