See the calibrate.* functions and the val.surv (for external validation)
functions in the rms package. Note especially the new continuous
calibration curve methods using hazard spline regression.
Frank
David Winsemius wrote:
A) Please do not highjack threads. Post new topics for new questions.
B) Calibration plots are very easy for either logistic regression or Cox
models when using the calibrate function in either Harrell's rms or
Design packages. (Not sure about how well they play with survfit
objects, but you ought to be able to apply the same methods.)
--
Frank E Harrell Jr Professor and Chairman School of Medicine
Department of Biostatistics Vanderbilt University
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