[R] NRI or IDI for survival data - Hmisc package

[Pascal Oettli]

Hello,

I have no knowledge of survival data analysis. But I have some skill in 
using a web search engine:

http://cran.r-project.org/web/views/Survival.html
http://cran.r-project.org/web/packages/survIDINRI/index.html

Regards,
Pascal


Le 28/11/2012 10:22, array chip a écrit :
> Hi, I am trying to calculate net reclassification improvement (NRI) and Inegrated Discrimination Improvement (IDI) for a survival dataset to compare 2 risk models. It seems that the improveProb() in Hmisc package does this only for binary outcome, while rcorrp.cens() does take survival object, but doesn't output NRI or IDI. Can anyone suggest any other packages that can calculate NRI and IDI for survival data?
>
> The reference for NRI extending to survival data is:
> Pencina MJ, D'Agostino RB, Steyerberg EW (2011): Extensions of net
> reclassification improvement calculations to measure usefulness of new
> biomarkers. Stat in Med 30:11-21
>
> Thanks!
>
> John
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>
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