Bioequivalence and Bioavailability Forum • Design with not estimable contrast

Design with not estimable contrast [Software]

posted by d_labes – Berlin, Germany, 2018-07-28 14:43 (1886 d 03:14 ago) – Posting: # 19113
Views: 5,391

Dear ElMaestro, dear Libaiyi,

❝ That table looks strange...

For me too. Seems Libaiyi has used a design, in which one of the contrasts is not estimable, for what reasons ever. Libaiyi, could you give is some more info about the design and the SAS code used?

❝ And what about alpha 0.1?

That's a peculiarity of the almighty SAS which always calculates a two sided CI, i.e. if you specify alpha=0.05 (the default) it calculates the 95% CI (0.025 to each side) and not the appropriate 90% CI.

—
Regards,

Detlew

Complete thread:

the results of sample size based on PowerTOST libaiyi 2018-07-27 05:34 [Software]
- sample size based on PowerTOST: total number of subjects Helmut 2018-07-27 11:24
  - sample size based on PowerTOST: total number of subjects libaiyi 2018-07-27 11:49
- the results of sample size based on PowerTOST ElMaestro 2018-07-27 19:57
  - Design with not estimable contrastd_labes 2018-07-28 12:43
  - the results of sample size based on PowerTOST libaiyi 2018-07-31 04:13
    - the results of sample size based on PowerTOST ElMaestro 2018-07-31 11:07