Survival-Analysis: How to get numerical values from survfit (and not just a plot)?
Hi, See ?survfit.object if fit is the object you get using survfit, fit$surv will give you the survival probability. Best, arthur
Bernhard Reinhardt wrote:
Hi!
I came across R just a few days ago since I was looking for a toolbox
for cox-regression.
I?ve read
"Cox Proportional-Hazards Regression for Survival Data
Appendix to An R and S-PLUS Companion to Applied Regression" from John Fox.
As described therein plotting survival-functions works well
(plot(survfit(model))). But I?d like to do some manipulation with the
survival-functions before plotting them e.g. dividing one
survival-function by another.
survfit() only returns an object of the following structure
n events median 0.9LCL 0.9UCL
55.000 55.000 1.033 0.696 1.637
Can you tell me how I can calculate a survival- or baseline-function out
of these values and how I extract the values from the object? I?m sure
the calculation is done by the corresponding plot-routine, but I
couldn?t find that one either.
Regards
Bernhard
______________________________________________ R-help at 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.