[R] confidence intervals for Harrell's c-index in survival setting

[David Winsemius]

On Aug 17, 2010, at 6:10 AM, North, Bernard V wrote:

> Dear All,
>
> Is it possible to get confidence intervals for Harrell's concordance  
> index or, equivalently, Somer's D using the rms package or in some  
> other way ?
> I have survival data it would be the c-index in the Cox model setting

I believe that Frank has answered this question several times on the  
list. Have you done a search of the r-help archives?

-- 
David.
>
> Many thanks
>
>
>
>
> Dr Bernard North
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David Winsemius, MD
West Hartford, CT