[R-sig-ME] FW: syntax lmer random effects

[Nathan Leon Pace, MD, MStat]

Forgot to add that the family = binomial.

Nathan

> Hi,
> 
> Even after reading the various help files, I don¹t really understand the
> formatting of the grouping factor.
> 
> My model is z ~ x*y with 1 grouping factor. I wish to compare models with
> only an intercept random effect, random effects for intercept and x, random
> effects for intercept and y, random effects for intercept plus x and y
> (independent and not independent), and random effects for all fixed effects
> (independent and not independent).
> 
> My data frame has 360 rows with 24 levels of the grouping factor
> 
>> sessionInfo()
> R version 2.5.1 (2007-06-27)
> i386-apple-darwin8.9.1
> 
> locale:
> en_US.UTF-8/en_US.UTF-8/en_US.UTF-8/C/en_US.UTF-8/en_US.UTF-8
> 
> attached base packages:
> [1] "stats"     "graphics"  "grDevices" "utils"     "datasets"  "methods"
> "base"     
> 
> other attached packages:
>         lme4       Matrix      lattice
>  "0.99875-4" "0.999375-0"     "0.16-2"
> 
> Insights will be appreciated.
> 
> Nathan
> -- 
> Nathan Leon Pace, MD, MStat
> University of Utah
> n.l.pace at utah.edu
> W: 801.581.6393
> F: 801.581.4367
> M: 801.205.1019
> 
> 
> 
> 
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> 
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