Re: [R] Mixed Effects Model Power Calculations

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

On Ti, 2005-08-16, 21:17, rab45+@pitt.edu 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

http://maven.smith.edu/~nhorton/R/

HTH,
Henric

> 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.
>
> ______________________________________________
> R-help@stat.math.ethz.ch mailing list
> https://stat.ethz.ch/mailman/listinfo/r-help
> PLEASE do read the posting guide!
> http://www.R-project.org/posting-guide.html



R-help@stat.math.ethz.ch mailing list
https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html Received on Wed Aug 17 18:51:17 2005

This archive was generated by hypermail 2.1.8 : Fri 03 Mar 2006 - 03:39:50 EST