Bioequivalence and Bioavailability Forum • Numbers

Numbers [Two-Stage / GS Designs]

posted by d_labes – Berlin, Germany, 2011-02-16 14:45 (5595 d 13:31 ago) – Posting: # 6637
Views: 31,130
(edited on 2011-02-16 15:15)

Ahoy my dear Captn,

my crowdy R code gives for n1=36, CV=30% (but only 100 000 sims):

ratio=1.25 (->alpha)

p(accept BE)= 0.041

p(accept BE, stage 1)= 0.031

% in stage 2= 80.7

mean N= 47.5 



ratio=0.95 (->power)

p(accept BE)= 0.836

p(accept BE, stage 1)= 0.676

% in stage 2= 28.9

mean N= 40.7

Seems nearly the result of Potvin et. al.

—
Regards,

Detlew

Complete thread:

Potvin method B subtleties d_labes 2011-01-31 14:24
- Potvin method B subtleties jdetlor 2011-02-01 17:17
  - Potvin method B subtleties d_labes 2011-02-02 09:15
    - Potvin method B subtleties jdetlor 2011-02-02 16:08
      - Gould d_labes 2011-02-02 16:25
        
        Gould jdetlor 2011-02-02 17:02
- Another one ... d_labes 2011-02-07 14:32
  - Oops! Helmut 2011-02-07 15:24
    - Oops! d_labes 2011-02-07 16:29
      - Oops! Helmut 2011-02-07 16:47
        
        Oops! ElMaestro 2011-02-07 17:06
        
        Oops! Helmut 2011-02-07 17:17
        
        Oops! ElMaestro 2011-02-07 18:35
        
        Simul'ants in my pants d_labes 2011-02-08 09:07
        
        Need for speed... ElMaestro 2011-02-13 10:57
        
        Need for speed... d_labes 2011-02-15 14:06
        
        Need for speed... ElMaestro 2011-02-15 17:39
        
        Pocock alpha's d_labes 2011-02-16 09:18
        
        ElMaestro's brain ElMaestro 2011-02-16 09:32
        
        ElMaestro's brain d_labes 2011-02-16 10:05
        
        ElMaestro's brain ElMaestro 2011-02-16 12:07
        
        Numbersd_labes 2011-02-16 13:45
- Bonus counter-question ElMaestro 2011-02-07 23:44
  - Speed is the question d_labes 2011-02-08 08:36
- New paper (method D for PE 0.90) Helmut 2011-04-18 12:58
  - New paper (method D for PE 0.90) d_labes 2011-04-19 08:58
    - New paper (method D for PE 0.90) Helmut 2011-04-19 14:30
    - New paper (method D for PE 0.90) ElMaestro 2011-04-19 14:49
      - Stopping criterion # futility rule Helmut 2011-04-19 15:28