GENLINMIXED EMMEANS don't agree with descriptives

Posted by Beckstead, Jason-2 on Feb 22, 2021; 7:42pm
URL: http://spssx-discussion.165.s1.nabble.com/GENLINMIXED-EMMEANS-don-t-agree-with-descriptives-tp5740214.html

Hello all,

 

I am using GENLINMIXED procedure to analyze binary responses from a 3 x 3 within-subjects design. Each subject provided 9 responses (coded 0, 1). I am running a multilevel logistic regression model specifying a binomial distribution and logit link function. I include a random intercept to account for the within-subjects data structure. The procedure executes fine without any errors or warnings.

When I request the marginal means (and 95% C.I.s) with the /EMMEANS subcommand, however, the values provided by GENLINMIXED do not equal the values I get when I run MEANS procedure on the same data.

 

Any help reconciling would be appreciated.

Jason

 

 

_____________________________________________________________

Jason W. Beckstead, Ph.D.       

  Professor/Quantitative Methodologist

  University of South Florida College of Public Health

  13201 Bruce B. Downs Blvd., MDC56, Tampa, FL 33612, USA

  Statistical Editor, International Journal of Nursing Studies

  phone: [phone]  fax: [phone]          

  personal website:  http://personal.health.usf.edu/jbeckste/

  International Journal of Nursing Studies  http://www.elsevier.com/ijns

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