Hi,
Sorry to trouble the list. I have a problem which I'm not sure how to resolve.
I have a Cox model with 1 independent variable with 2 categories (and thus 2 survival curves on plotting survfit)
How can I get an estimate of survival for each category at a
particular time point, with standard error?
Looking through ?cph and ?coxph, I'm not quite sure how to go about
that. I would really appreciate any direction here.
Thanks a million!
Min-Han
The survest function in the Design package makes this easy. You can also probably do it without a lot of hassle using standard survival package routines. With survest you can easily specify covariate combinations for which to obtain predictions.
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Frank E Harrell Jr Professor and Chair School of Medicine
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