Deepayan Sarkar deepayan at stat.wisc.edu
Wed Dec 8 15:25:16 CET 2004

On Wednesday 08 December 2004 07:35, Alex wrote:
> Hi all,
> Could someone please tell me if we have to group data in the units
> with a command such "factor()" or "groupedData()" before using the
> functions glmmPQL or GLMM. I didn't do that and at first my results
> seem OK, but I'd like to solve this doubt.

Factors in your model should definitely be made factors. groupedData is 
completely optional.


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