[R] Power analysis for repeated measures ANCOVA

Spencer Graves spencer.graves at pdf.com
Sun Sep 24 12:13:31 CEST 2006


      I haven't seen a reply to this post, and you may have moved beyond 
this question by now, but I will nevertheless offer one brief question:  
Have you looked at 'simulate.lme'?  This might simplify coding your 
power analysis. 

      Hope this helps. 
      Spencer Graves

Steve Su wrote:
> Dear All,
>
>  
>
> I wonder if anyone has written a code for power analysis with repeated
> measures ANCOVA? I am aware of the following reference:
>
>  
>
> Frison L and Pocock SJ: Repeated Measures in Clinical Trials: analysis
> using mean summary statistics and its implications for design in
> Statistics in Medicine, 1992, 11:1685-1704.
>
> Statistics in Medicine
>
>  
>
> It will probably be fairly easy to code this up or even work on this
> from scratch, but it would be good if people have already done this and
> can share their code.
>
>  
>
> Thanks.
>
>  
>
> Steve.
>
>
> 	[[alternative HTML version deleted]]
>
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