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RegisterStill unclear… [General Statistics]
posted by Helmut 
– Vienna, Austria, 2013-08-27 17:07 (4316 d 07:08 ago) – Posting: # 11357
Views: 6,622
Hi Anu,
The acceptance range is 80.00–125.00% (90% CI in percent rounded to two decimals).
This doesn’t makes sense to me. Do you mean data for a test product (in % of the reference)?
Duno. I don’t believe in these numbers – where do they come from? In % of the reference the CI would be 98.93–99.70%. Assuming a 2×2 cross-over that would translate even for the smallest acceptable sample size of 12 into a CV of 0.52% [sic]. Simply impossible.
❝ I just need to know in FDA the accepted confidence intervals ranges are (80%-125%) & (-20% to +20%).
The acceptance range is 80.00–125.00% (90% CI in percent rounded to two decimals).
❝ I have a data for a reference product whose 90% CI is (-1.07% to -0.30%) on the CI scale of (-20% to +20%).
This doesn’t makes sense to me. Do you mean data for a test product (in % of the reference)?
❝ I want to transform it into the CI scale of (80%-125%).
❝ Can I do this?
Duno. I don’t believe in these numbers – where do they come from? In % of the reference the CI would be 98.93–99.70%. Assuming a 2×2 cross-over that would translate even for the smallest acceptable sample size of 12 into a CV of 0.52% [sic]. Simply impossible.
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Dif-tor heh smusma 🖖🏼 Довге життя Україна!
Helmut Schütz
The quality of responses received is directly proportional to the quality of the question asked. 🚮
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Complete thread:
- Confidence limits Anu 2013-08-26 07:15 [General Statistics]
![[Mix]](https://static.bebac.at/img/mix.png "open in Mix view")
- Confidence limits Dr_Dan 2013-08-26 11:05
- Confidence limits Anu 2013-08-27 06:26
- Still unclear…Helmut 2013-08-27 15:07
- Is it still unclear :( ? Anu 2013-08-28 09:08
- Still unclear…Helmut 2013-08-27 15:07
- Confidence limits Anu 2013-08-27 06:26
- Confidence limits jag009 2013-08-26 15:48
- Confidence limits Anu 2013-08-27 06:28
- Confidence limits ElMaestro 2013-08-27 06:47
- Confidence limits Anu 2013-08-28 09:12
- Confidence limits ElMaestro 2013-08-27 06:47
- Confidence limits Anu 2013-08-27 06:28
- Confidence limits Dr_Dan 2013-08-26 11:05
Ing. Helmut Schütz