Thanks Garry.
The reference is:
Peirce JC, Cornell RG. Integrating stratum-specific likelihood
ratios with the analysis of ROC curves. Med Decis Making
1993;13:141-51.
My objective is to determine--through ROC curves and LR--a threshold
value among a continuous variable (age) that predicts a dicotomous
variable (increased mortality at 5-yr f/u). By combining adjacent
strata with statistically indistinct SSLRs (i.e., those with
overlapping 95% confidence intervals), we hope to determine a
threshold value for age.
Mark
--
Mark J. Russo, MD, MS
Department of Surgery
New York-Presbyterian Hospital/Columbia
177 Fort Washington Ave, 7GS313
New York, New York 10032
Phone: 212-202-4997
Fax: 212-202-4997
[email protected]
Quoting Garry Anderson <[email protected]>:
> What is the reference for Peirce please?
>
>
> At 10:47 PM 27/11/2005 -0500, you wrote:
> >Is it possible to calculate stratum-specific likelihood ratios
> with
> >confidence intervals as described by Peirce using Stata. Or
> could
> >anyone recommend a program to perform these calculations?
> >Thanks,
> >Mark
> >
> >--
> >Mark J. Russo, MD, MS
> >Department of Surgery
> >New York-Presbyterian Hospital/Columbia
> >177 Fort Washington Ave, 7GS313
> >New York, New York 10032
> >Phone: 212-202-4997
> >Fax: 212-202-4997
> >[email protected]
> >
> >
> >
> >*
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>
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