[R] weights in mixed model

Thomas Lumley tlumley at u.washington.edu
Tue Sep 2 20:28:40 CEST 2003

On Tue, 2 Sep 2003, tzhou1 wrote:

> Hi,
> I have a question about how to do case weight in mixed model using R. I read
> Pinhiero and Bates (2000) Mixed-Effects Models in S and S-Plus. The weight
> functions in there are not what I wanted. Can R do case weight, giving each
> observation my own weight? If so, could you give me some references and
> examples? I'm looking forward to hearing from you!

It depends on what you mean by weights.

The standard thing to mean in regression is weights that are inversely
proportional to variances, but lme() does this, so I assume you mean
something else.  What?


Thomas Lumley			Assoc. Professor, Biostatistics
tlumley at u.washington.edu	University of Washington, Seattle

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