Re: [R] C-index

From: Frank E Harrell Jr <f.harrell_at_vanderbilt.edu>
Date: Tue, 05 Feb 2008 11:29:00 -0600

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

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-- 
Frank E Harrell Jr   Professor and Chair           School of Medicine
                      Department of Biostatistics   Vanderbilt University

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Received on Tue 05 Feb 2008 - 22:46:22 GMT

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