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Re: st: Fwd: Comparing marginal effects of two subsamples


From   Maarten Buis <maartenlbuis@gmail.com>
To   statalist@hsphsun2.harvard.edu
Subject   Re: st: Fwd: Comparing marginal effects of two subsamples
Date   Mon, 24 Oct 2011 17:43:31 +0200

On Mon, Oct 24, 2011 at 5:33 PM, Jianhong Chen wrote:
> First, I used nbreg, dv iv moderator iv*moderator, the coefficient of
> interaction terms in results section is 0.81. Then, I used nbreg, dv
> iv moderator iv* moderator, irr; the IRR of interaction terms in the
> results section is 1.20. Both is significant (p=0.023).

That will always be true. -irr- does not change the model, it only
changes how the results are displayed.

-- Maarten

--------------------------
Maarten L. Buis
Institut fuer Soziologie
Universitaet Tuebingen
Wilhelmstrasse 36
72074 Tuebingen
Germany


http://www.maartenbuis.nl
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