Re: st: Sample size for cluster randomised trials

["Michael N. Mitchell" <Michael.Norman.Mitchell@gmail.com>]

Dear Nick

  In addition to -sampclus-, there is the program called "Optimal Design" which you can 
download for free at

http://www.wtgrantfdn.org/resources/overview/research_tools/research_tools

  That page has a link for the software as well as a very good manual that not only 
explains how to use the software, but also provides great background information for power 
calculations for cluster randomised trials.

  Here are a couple of additional references that could be very useful.

http://www.ssicentral.com/hlm/techdocs/RaudenbushandLiu00.pdf
http://www.ssicentral.com/hlm/techdocs/PsychMethods97.pdf

Best luck,

Michael N. Mitchell
Data Management Using Stata      - http://www.stata.com/bookstore/dmus.html
A Visual Guide to Stata Graphics - http://www.stata.com/bookstore/vgsg.html
Stata tidbit of the week         - http://www.MichaelNormanMitchell.com



On 2010-06-04 6.48 AM, Nikolaos Pandis wrote:
> Hi to all.
>
> I was wondering if there is an ado available for sample size calculation of cluster randomised trials?
>
> Many thanks,
>
> Nick
>
>
>
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