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st: sample size ?

From   amir gahremanpour <[email protected]>
To   statalist <[email protected]>
Subject   st: sample size ?
Date   Sun, 28 Aug 2011 00:11:08 -0500

Dear statalisters

How do I use stata to randomize the subjects to more than two groups for repeated measures but in a way that I assign two subjects to treatment group and one to control. For example treatment A 20 subjects, Treatment B 20 and control 10 subjects with 4 follow up time points. I am not sure if  sampsi or fpower can handle it. 

many thanks
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