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Re: st: AW: fit statistics for svy: mlogit

From   Maarten buis <>
Subject   Re: st: AW: fit statistics for svy: mlogit
Date   Thu, 11 Feb 2010 13:04:38 -0800 (PST)

--- On Thu, 11/2/10, Kate Perper wrote:
> I am working with multinomial logit models and
> using survey data.  I would like to see if adding
> interactions to my model improves the fit.  Given
> that I'm working with survey data, what is the best
> way to compare model fit?

You use -test- on the interaction terms, see: <>.
Testing whether this interaction term equals zero is not
to everybody's taste (in particular those who look
at marginal effects), but if interpret your effects in
terms of odds ratios/relative risk ratios) then it 
does make sense. <

Hope this helps,

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


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