Date:         Wed, 21 Jun 2006 16:41:34 -0700
Reply-To:     SR Millis <srmillis@yahoo.com>
Sender:       "SPSSX(r) Discussion" <SPSSX-L@LISTSERV.UGA.EDU>
From:         SR Millis <srmillis@yahoo.com>
Subject:      Re: logistic regression
Comments: To: campenni@es.marywood.edu
In-Reply-To:  <1151.70.105.194.29.1150931933.squirrel@mail.marywood.edu>
Content-Type: text/plain; charset=iso-8859-1

Have you assessed the degree of collinearity among your predictors/covariates?

  SR Millis

Estelle Campenni <campenni@es.marywood.edu> wrote:
  In running a series of logistic regressions, I have noted that
classification does not change at all from step 0 with the use of the mode
to that found using the regression model. Yet, the chi-square test of the
overall model is significant as are the coefficients as determined by the
Wald stat. How could that be and how should I interpret this? Also, why
would an exp(B) of 1.078 be significant?

Estelle



Scott R Millis, PhD, MEd, ABPP (CN & RP)
Professor & Director of Research
Department of Physical Medicine & Rehabilitation
Wayne State University School of Medicine
261 Mack Blvd
Detroit, MI 48201
Email: smillis@med.wayne.edu
Tel: 313-993-8085
Fax: 313-745-9854

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