[R] glmmPQL in 2.3.1

Justin Rhodes jrhodes at cyrus.psych.uiuc.edu
Mon Sep 25 15:46:09 CEST 2006

Dear R-help,

I recently tried implementing glmmPQL in 2.3.1, and I discovered a 
few differences as compared to 2.2.1.  I am fitting a regression with 
fixed and random effects with Gamma error structure.  First, 2.3.1 
gives different estimates than 2.2.1, and 2.3.1, takes more 
iterations to converge.  Second, when I try using the anova function 
it says,  "'anova' is not available for PQL fits",  why?  Any help 
would be greatly appreciated.

Best wishes,


Justin S. Rhodes
Assistant Professor
Department of Psychology
Beckman Institute
Neuroscience Program, Institute for Genomic Biology
University of Illinois
405 N. Mathews Avenue
Urbana, IL 61801

Ph: 217-265-0021
Fax: 217-244-5180
e-mail: jrhodes at uiuc.edu


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