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st: comparing regression coefficients across two models with the same dependent variables


From   James Bernard <jamesstatalist@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   st: comparing regression coefficients across two models with the same dependent variables
Date   Thu, 2 May 2013 22:12:40 +0800

Hi all,

This may seem simple, but the seems to be no consensus on it. I have
two regressions with the same dependent variables

I want to compare the same independent variable across these two models:

Y=a+b0X+b1Z
Y=a+b0X+b1W

Now, I want to compare b0 across these two models. Any idea if this
can be done in Stata?

Comparing two coefficients in the same model is rather discussed and
clear, but how about the case I mentioned? (the reason I am doing this
is that I am splitting my sample instead of using interaction effects)

I appreciate your help

James
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