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Re: st: Omitted category interaction variables
From
Maarten Buis <[email protected]>
To
[email protected]
Subject
Re: st: Omitted category interaction variables
Date
Mon, 4 Nov 2013 14:48:01 +0100
On Mon, Nov 4, 2013 at 2:18 PM, Estrella Gomez wrote:
> Yes, but this is not what I want. Then it excludes the year 2006 in
> the last set of dummies; i.year; but I want it to be excluded from
> every interaction term (i.year#c.ldist; i.year#i.dhome and
> i.year#i.dlang)
You forget to include the main effects of ldist dhome and dlang. That
is probably what is causing the problems, as in that case you don't
want to exclude a reference category. If you include the main effects,
then setting the baseline once will be enough.
-- Maarten
---------------------------------
Maarten L. Buis
WZB
Reichpietschufer 50
10785 Berlin
Germany
http://www.maartenbuis.nl
---------------------------------
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