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re:st: Hausman test

From   Christopher Baum <>
To   "" <>
Subject   re:st: Hausman test
Date   Tue, 3 Jan 2012 10:32:23 -0500

Ricardo said

I am interested in modeling cholesterol and because of the correlation within families I used -xtreg, re- (GLS) regression. However when use a Hausman test to compare the fitted model with a -xtreg, fe - model, I get p=0.00024. 

My understanding is that I should not use the random effects model, but should be using the fixed effect. What is the implication if I ignore the Hausman test and report results from the random efects model?

According to the verdict of the Hausman test, your included regressors in the RE model cannot possibly be considered independent of the random effects. Thus the coefficients on those regressors are biased and inconsistent, and the RE estimates should be trashed.


Research Papers in Economics (RePEc)

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