R help - Sep 2012 - validate.lrm - confidence interval for boostrap-corrected AUC ?

Hi



Does anyone know whether the rms package provides a confidence interval for
the bootstrap-corrected Dxy or c-index?



I have fitted a logistic model, and would like to obtain the 95% confidence
interval of the bootstrap-corrected area under the ROC curve estimate.



Thanks.

	[[alternative HTML version deleted]]

It does not offer that feature.  That is an area of active research.  If
anyone knows of a paper that has solved this problem please let me know.
Frank

Whee Sze Ong wrote
> Hi
> 
> 
> 
> Does anyone know whether the rms package provides a confidence interval
> for
> the bootstrap-corrected Dxy or c-index?
> 
> 
> 
> I have fitted a logistic model, and would like to obtain the 95%
> confidence
> interval of the bootstrap-corrected area under the ROC curve estimate.
> 
> 
> 
> Thanks.
> 
> 	[[alternative HTML version deleted]]
> 
> ______________________________________________
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> PLEASE do read the posting guide
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> and provide commented, minimal, self-contained, reproducible code.




-----
Frank Harrell
Department of Biostatistics, Vanderbilt University
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