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Hi, this is just a quick note to inform you of a free sample size
tool I developed for Microsoft Excel, available for download here:
http://individual.utoronto.ca/ddubins/
It calculates sample sizes for the following trial designs:
-Superiority Trials: Parallel and 2-way Crossover
-Clinical Equivalence Trials: Parallel and 2-way Crossover
-Non-Inferiority Trials: Parallel and 2-way Crossover
-Bioequivalence Trials: Crossover, Replicate, and Parallel
-Trials to a Given Precision: Parallel and Crossover
-Difference Between Proportions (for smaller trials, up to 170 subjects)
I developed this tool for a seminar on sample size determination, and
I think it could come in handy for this newsgroup. If for some reason
the file goes offline, you can contact me at dndubins.aaa.yahoo.ca for a
copy.
Cheers,
-Dave Dubins
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