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Hi Sam,
Post-hoc power is to me not meaningful. I have no idea how to apply knowledge of that value. And stop up and think: What can you say about the power of a trial in which your PE is close to 0.79 regardless of sample size etc.?
Honestly, I think might be game over for the current formulation unless you have a good reason to cast doubt over the result (and as indicated above, a good reason is not just that the result is unwanted). If the past result is credible then a repeat trial could very well be futile and thus unethical as well as a waste of time and money.
❝ The PE of my pilot study was 90% and based on that the sample size of 54 was considered and including the dropout and withdrawn the final sample size of 64 was considered. But in the pivotal study the PE comes out to be 79% with power of 100% which shows that our sample size is very correct but there is some problem may be with study conduct or formulation. We have one more justification that the Pivotal PE of the Fed study is same as that of the Pilot which we carried out and Fed study meets the BE criteria.
Post-hoc power is to me not meaningful. I have no idea how to apply knowledge of that value. And stop up and think: What can you say about the power of a trial in which your PE is close to 0.79 regardless of sample size etc.?
Honestly, I think might be game over for the current formulation unless you have a good reason to cast doubt over the result (and as indicated above, a good reason is not just that the result is unwanted). If the past result is credible then a repeat trial could very well be futile and thus unethical as well as a waste of time and money.
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Pass or fail!
ElMaestro
Pass or fail!
ElMaestro
Complete thread:
- Regulatory Query for study repeat sam 2013-07-27 07:50
![[Mix]](https://static.bebac.at/img/mix.png "open in Mix view")
- Repeats ElMaestro 2013-07-27 11:01
- Repeats sam 2013-07-27 11:18
- RepeatsElMaestro 2013-07-27 11:31
- Repeats sam 2013-07-27 11:57
- Repeats ElMaestro 2013-07-27 12:27
- Repeats sam 2013-07-27 12:45
- Bad science Helmut 2013-07-27 14:15
- Bad science sam 2013-07-28 09:05
- Posting style & incomplete information Helmut 2013-07-28 12:32
- Posting style & incomplete information sam 2013-07-29 06:46
- RTFM! Helmut 2013-07-29 07:53
- RTFM! sam 2013-07-29 08:40
- copy & paste error or what? Helmut 2013-07-29 11:14
- copy & paste error or what? sam 2013-07-29 12:46
- copy & paste error or what? Helmut 2013-07-29 11:14
- Calm down! jag009 2013-07-29 16:06
- RTFM! sam 2013-07-29 08:40
- Slightly off-topic: The wonders of pilot trials ElMaestro 2013-07-29 09:19
- Futility rule? Helmut 2013-07-29 12:16
- Futility rule? ElMaestro 2013-07-29 12:46
- Slightly off-topic: The wonders of pilot trials sam 2013-07-29 12:41
- PE of AUC? Helmut 2013-07-29 12:45
- PE of AUC? sam 2013-07-29 12:56
- EOD Helmut 2013-07-29 13:18
- PE of AUC? sam 2013-07-29 12:56
- PE of AUC? Helmut 2013-07-29 12:45
- Futility rule? Helmut 2013-07-29 12:16
- Posting style & incomplete information jag009 2013-07-29 16:32
- Posting style & incomplete information sam 2013-07-30 06:08
- RTFM! Helmut 2013-07-29 07:53
- Posting style & incomplete information sam 2013-07-29 06:46
- Bad science ElMaestro 2013-07-28 12:43
- Posting style & incomplete information Helmut 2013-07-28 12:32
- Bad science sam 2013-07-28 09:05
- Repeats ElMaestro 2013-07-27 12:27
- Repeats jag009 2013-07-27 22:17
- Repeats ElMaestro 2013-07-27 23:11
- Repeats sam 2013-07-27 11:57
- RepeatsElMaestro 2013-07-27 11:31
- Repeats sam 2013-07-27 11:18
- Regulatory Query for study repeat jag009 2013-07-27 22:29
- Regulatory Query for study repeat sam 2013-07-29 12:36
- Regulatory Query for study repeat luvblooms 2013-07-30 08:28
- More questions.. jag009 2013-07-30 16:53
- Regulatory Query for study repeat luvblooms 2013-07-30 08:28
- Regulatory Query for study repeat sam 2013-07-29 12:36
- Repeats ElMaestro 2013-07-27 11:01
Ing. Helmut Schütz