Several responders have given input on how to find and read the code for summary.coxph and print.coxph, or using str() to examine the output of a coxph object.
An even better starting place would be the documentation (yes there is some). help(coxph) gives a page that contains: "Value: an object of class coxph. See 'coxph.object' for details." and help(coxph.object) gives a description of all the components. 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.