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Re: st: relation between 2 coefficients in a regression analysis


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: relation between 2 coefficients in a regression analysis
Date   Fri, 5 Apr 2013 09:34:08 +0200

On Fri, Apr 5, 2013 at 4:26 AM, Rodrigo Badilla wrote:
> I would like know if there exist some test or command to get the
> relation or effect
> between two coefficients in the a same model for independent variables in a
> multivariable regression analysis in panel data.

It is unclear to me what you want:
Are you looking for the covariance in the sampling distribution of the
coefficients? In that case type -matlist e(V)- after estimating your
model.
Are you looking for how much the effect of one variable changes as
another variable changes? This is called an interaction effect. Look
at -help fvvarlist-.

Hope this helps,
Maarten

---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany

http://www.maartenbuis.nl
---------------------------------
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