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

posted by The Outlaw Torn – Europe, 2015-05-13 14:49 (3560 d 11:24 ago) – Posting: # 14802
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Good day to all,

Another return to post hoc power analysis to raise Helmut's blood pressure. Ha!

Is post hoc power analysis also useless for therapeutic equivalence trials (non-inferiority, two arm, active-controlled, parallel group) intended to demonstrate the IOP-lowering efficacy of a generic anti-glaucoma medication versus the originator?

My first thought is that, yeah, it's the same principle as with standard bioequivalence, but since the confidence intervals are measured in mm Hg, I become uncertain as a non-statistician.

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

Any comment by anyone is appreciated and thank you in advance.

Outlaw Torn


Edit: Category changed. [Helmut]

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