The power of post hoc power [Power / Sample Size]

posted by ElMaestro  – Denmark, 2015-05-13 19:53 (3565 d 09:20 ago) – Posting: # 14810
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Hi Outlaw Torn,

❝ My first thought is that, yeah, it's the same principle as with standard bioequivalence (...)


You were right from the beginning.

❝ Questions are being raised that the sample size may have been inadequate.


And that could also be correct. Power is based on assumptions. If those assumptions are wrong (like the point estimate, the variability) then that is an issue. So perhaps you'd be revising your assumptions when you do power/Sample sze for the next trial.

Pass or fail!
ElMaestro

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