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st: Two Segmented logistic regression

From   "Valdivia Miranda, Walter" <>
To   <>
Subject   st: Two Segmented logistic regression
Date   Sat, 25 Sep 2004 14:45:11 -0500

Dear Statalist members,

I want to implement in Stata a two segmented (quadratic-quadratic) logistic model to test the existence and estimate the location of the changepoint in a (U-shaped) relationship: continuous covariate--dichotomic response, as it was described by Goetghebeur and Pocock :("detection and estimation of J-shaped risk-response relationships" JRSSA 1995; 158:107-121). 


Are there routines in Stata to do this?.  Any help or suggestion would be much appreciated.

Walter Valdivia.


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