Bioequivalence and Bioavailability Forum • The power of post hoc power

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

posted by ElMaestro – Denmark, 2015-05-13 19:53 (4056 d 22:16 ago) – Posting: # 14810
Views: 14,078

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

Complete thread:

The power of post hoc power The Outlaw Torn 2015-05-13 12:49 [Power / Sample Size]
- The power of post hoc powerElMaestro 2015-05-13 17:53
  - Ad hoc power d_labes 2015-05-13 20:18
    - Ad hoc power The Outlaw Torn 2015-05-14 11:38
      - Ad hoc power The Outlaw Torn 2015-06-15 11:20
        
        Hypotheses in non-inferiority trials mittyri 2015-06-16 21:52
        
        Hypotheses in non-inferiority trials The Outlaw Torn 2015-06-17 11:35
        
        Hypotheses in non-inferiority trials d_labes 2015-06-18 10:17
        
        Hypotheses in non-inferiority trials The Outlaw Torn 2015-06-22 10:23
        
        Hypotheses in non-inferiority trials arjunroy 2015-06-29 08:24