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RE: st: Interpreting 3 way dummy interaction with margins


From   Lauren Beresford <lberesfo@hotmail.com>
To   Statalist <statalist@hsphsun2.harvard.edu>
Subject   RE: st: Interpreting 3 way dummy interaction with margins
Date   Tue, 7 Feb 2012 16:14:37 +0000

Dear Maarten,
Thank you for responding to the post.  I think I will just stick with my original codes for margins.  
I have a rather long list of controls and even when I take those out, using your tip produces too much collinearity and most of the model is dropped.  I think this is because I am including all lower order interactions in addition to the higher order interactions.  


Best,
Lauren Beresford
Doctoral CandidateUC Berkeley, Sociology

> Date: Mon, 6 Feb 2012 18:24:53 +0100
> Subject: Re: st: Interpreting 3 way dummy interaction with margins
> From: maartenlbuis@gmail.com
> To: statalist@hsphsun2.harvard.edu
> 
> On Mon, Feb 6, 2012 at 6:16 PM, Lauren Beresford wrote:
> > If I follow the logic put forth in Maarten Buis' Stata tip 87 "Interpretation of interactions in non-linear models" my margins command would look like this: <snip>
> 
> That Stata tip is not the best source for how to use -margins-.
> Actually, the main point of that tip is not to use -margins- but
> rather look at the odds ratios directly. With a three way interaction
> that will probably be a bit too awkward, but by using some tricks from
> the following forthcomming Stata tip that may actually be well doable
> and useful: <http://www.maartenbuis.nl/publications/ref_cat.html>.
> 
> I know that this is not quite the answer you are looking for, but I
> hope it still helps,
> Maarten
> 
> --------------------------
> Maarten L. Buis
> Institut fuer Soziologie
> Universitaet Tuebingen
> Wilhelmstrasse 36
> 72074 Tuebingen
> Germany
> 
> 
> http://www.maartenbuis.nl
> --------------------------
> 
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