R help - Apr 2012 - How to get the confidence interval of area under the time dependent roc curve

On 04/07/2012 05:00 AM, r-help-request at r-project.org
wrote:
>   It is possible to calculate the c-index for time dependent outcomes (such
as disease) using the survivalROC package in R. My question is : is it possible
to produce a p-value for the c-index that is calculated (at a specific point in
time)?How to get the confidence interval of area under then time dependent roc
curve (or by bootstrap)?
The current version of survival computes the c-index and it's standard 
error for time-dependent covariates.
Use summary(cox model fit) or the survConcordance function.

Terry T.