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st: ROC curve for ordinal data

From   "fmedeiros" <>
Subject   st: ROC curve for ordinal data
Date   Fri, 19 Dec 2003 06:32:53 -0200

> Dear Statalist,
> I would appreciate any comments regarding the following 
Is there a minimum number of categories to adequately fit a 
parametric ROC curve for ordinal data? For example, can we 
adequately fit a model when we have only 3 categories (for 
instance, abnormal, borderline and normal) 

thank you,

Felipe Medeiros. 

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