[R] C-index
Frank E Harrell Jr
f.harrell at vanderbilt.edu
Tue Feb 5 18:29:00 CET 2008
bereket weldeslassie wrote:
> Hi
>
> I am using Cox regression to identify at risk groups. How can I get the
> C-index in R?
>
> Thanks,
>
> Bereket
library(Hmisc)
?rcorr.cens
# assumes no overfitting
Also:
library(Design)
?validate
# penalizes for overfitting
Frank
> <'r-help at stat.math.ethz.ch'>
>
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--
Frank E Harrell Jr Professor and Chair School of Medicine
Department of Biostatistics Vanderbilt University
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