Date:         Wed, 3 Aug 2005 18:37:14 -0300
Reply-To:     Hector Maletta <hmaletta@fibertel.com.ar>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         Hector Maletta <hmaletta@fibertel.com.ar>
Subject:      Re: Reference Category for Categorical Vars in NOMREG
Comments: To: Marc Scoppettone <mscoppettone@IAGR.NET>
In-Reply-To:  <200508032100.j73L0qPR015164@listserv.cc.uga.edu>
Content-Type: text/plain; charset="iso-8859-1"

Marc,
You do not need it actually. In NOMREG you use categorical FACTORS and
quantitative COVARIATES. For factors, all values are used, as is usual in
ANOVA, in order to analyse the dependent variable for each combination of
factors' categories. And of course all the range of observed covariate
values is taken into account. There are NO reference categories for
independent variables in this procedure.

Hector

> -----Original Message-----
> From: SPSSX(r) Discussion [mailto:SPSSX-L@LISTSERV.UGA.EDU]
> On Behalf Of Marc Scoppettone
> Sent: Wednesday, August 03, 2005 6:01 PM
> To: SPSSX-L@LISTSERV.UGA.EDU
> Subject: Reference Category for Categorical Vars in NOMREG
>
> Does anyone know if there is a way to choose what coefficient
> estimate is set to zero for the multinomial logistic
> regression function?  I know how to control the reference for
> the dependent variable, but I am unable to find anything
> discussing the independent categorical variables.  I can
> always recode them to fit what the default syntax seems to
> be, but it seems to me there has to be an easier way.
>
> Thanks,
> Marc
>
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