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Re: Biwatch post# 27152

Saturday, 05/17/2014 8:01:41 PM

Saturday, May 17, 2014 8:01:41 PM

Post# of 427504
Biwatch: please, calculate the requested efficiancy and date with 90% power if the interim analysis will be at (events):

55% - 887
50% - 806
45% - 725
40% - 645
35% - 564
30% - 484

At 522 events (32,38%) with 90% power we need 25% and it will be in 11/2014 (Biwatch, 27152)

I think that this is the only one which - maybe - could be negotiated with the FDA and assuming that with 90% power R-IT will be stopped.
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