Re: [R] Mixed Effects Model Power Calculations

From: Henric Nilsson <>
Date: Wed 17 Aug 2005 - 18:42:56 EST

On Ti, 2005-08-16, 21:17, skrev:

> Is there an R package available that would facilitate doing a power/sample
> size analysis for linear mixed effects models?

I'm not aware of such a package (others might be...).

When it comes to sample size calculations, especially for tricky designs and/or advanced methodology, simulation is usually the best approach. An example using `lme' can be found at


> I have seen the Java applets made available by Russell Length which would
> seem to be able to handle most any lme, but there is little documentation
> and it's not clear how the models need to be formulated.
> Rick B.
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> mailing list PLEASE do read the posting guide! Received on Wed Aug 17 18:51:17 2005

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