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Re: st: RE: Time dependent ROC


From   sumit isharwal <sumitisharwal@gmail.com>
To   Martin Weiss <martin.weiss1@gmx.de>
Subject   Re: st: RE: Time dependent ROC
Date   Mon, 7 Jun 2010 13:06:06 -0400

Dear Dr Weiss

Thanks for the link. However it is not for time dependent ROC based
upon censored data set. I contacted Dr Pepe and she told me they
developed program for R and S-plus. I am wondering does any one
developed a program to calculate time dependent ROC in stata.

Thanks
Sumit

On Sun, Jun 6, 2010 at 5:50 AM, Martin Weiss <martin.weiss1@gmx.de> wrote:
>
> <>
>
> Have you taken a look at the two articles by Pepe et al. in Sj 9 (1)
> http://www.stata-journal.com/sj9-1.html and accompanying software -net from
> "http://www.stata-journal.com/software/sj9-1/"-?
>
>
>
> HTH
> Martin
>
>
> -----Original Message-----
> From: owner-statalist@hsphsun2.harvard.edu
> [mailto:owner-statalist@hsphsun2.harvard.edu] On Behalf Of sumit isharwal
> Sent: Sonntag, 6. Juni 2010 05:31
> To: statalist@hsphsun2.harvard.edu
> Subject: st: Time dependent ROC
>
> Hello All:
>
> I am looking for code/macro for time dependent ROC curve (Patrick J.
> Heagerty,Thomas Lumley, and Margaret S. Pepe: Time-Dependent ROC
> Curves for Censored Survival Data and a Diagnostic Marker.  BIOMETRICS
> 56, 337-344;2000) in Stata . Till now i have used only c-index to
> report accuracy of a biomarker (not sensitivity, specificity, ROC
> curve of a biomarker in time dependent censored data set). I would be
> obliged if someone have codes/macro to calculate time dependent ROC
> curve, sensitivity, specificity of a biomarker in censored data set.
>
> Regards
> Sumit
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-- 
Sumit Isharwal
Postdoctoral Research Fellow
The Johns Hopkins University School of Medicine
Baltimore, MD 21287
410-530-5085

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