Bioequivalence and Bioavailability Forum • df = df-1

df = df-1 [Two-Stage / GS Designs]

posted by d_labes – Berlin, Germany, 2015-10-08 10:10 (3906 d 15:21 ago) – Posting: # 15529
Views: 13,443

Dear ElMaestro,

❝ ... Though, technically I wonder if the above function call is approximative due to the lacking subtraction of a DF.

❝ Perhaps there'd be a point in updating the package to allow for curious people and nitpickers to specify if the call forms part of a two-stage approach and needs internal subtraction of a DF.

Good point! And totally correct.
But I suppose that it would be hard to find any differences in estimated sample sizes using the correct df.

There is no must to use PowerTOST. Although it is termed "Gold standard" at times :cool:

. But other software for SSE also lacks of this "deficiency" for nitpickers.

—
Regards,

Detlew

Complete thread:

Sequential trial with B method of Potvin john john 2015-10-01 17:44
- Sequential trial with B method of Potvin ElMaestro 2015-10-01 17:58
- Sequential trial with B method of Potvin Helmut 2015-10-01 18:13
  - Sequential trial with B method of Potvin john john 2015-10-07 11:26
    - Power to the people d_labes 2015-10-07 13:49
      - Power to the people john john 2015-10-07 14:54
        
        Software? Ethics beyond statistics… Helmut 2015-10-07 16:06
        
        Subtraction of a df ElMaestro 2015-10-07 21:22
        
        df = df-1d_labes 2015-10-08 08:10
    - Potvin B: α 0.0294 in both stages Helmut 2015-10-08 15:27
      - Potvin B: α 0.0294 in both stages john john 2015-10-23 12:04