[no subject]

-simulate- in conjunction with -drawnorm- might be more suitable for your 
situation, however.  For a general description of the approach (and a 
tutorial), see A. H. Feiveson, Power by simulation. _The Stata Journal_ 
2(2):107-24, 2002.  You'll need to be explicit about your assumptions for 
covariances, in any case.

Joseph Coveney

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