Bioequivalence and Bioavailability Forum

Confuse-a-Cat [Two-Stage / GS Designs]

posted by Helmut  – Vienna, Austria, 2017-08-19 19:33 (2772 d 00:19 ago) – Posting: # 17714
Views: 29,481

Hi ElMaestro,

❝ are you sure we are on the same page?

No. Completely misunderstood you.

❝ I am talking about the initial guess for the sample size iteration, not the sample size itself.

Now I get it – though your code is beyond me. Zhang’s method in many cases hits the right point in the first attempt. Sometimes sampleN.TOST() has to iterate upwards (since Zhang’s method is based on a large sample approximation and power with anything of the t-family will be lower). In very rare cases sampleN.TOST() has to iterate downwards. Can your code do that as well?

—
Dif-tor heh smusma 🖖🏼 Довге життя Україна! 
Helmut Schütz


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Complete thread:

• Initial sample size guess for the Potvin methods ElMaestro 2017-08-19 15:04 [Two-Stage / GS Designs] 
  • Initial sample size guess for the Potvin methods Helmut 2017-08-19 16:06
    • Initial sample size guess for the Potvin methods ElMaestro 2017-08-19 16:14
      • Initial sample size guess for the Potvin methods Helmut 2017-08-19 17:12
        • Initial sample size guess for the Potvin methods ElMaestro 2017-08-19 17:17
          • Confuse-a-CatHelmut 2017-08-19 17:33
            • Confuse-a-Cat ElMaestro 2017-08-19 17:56
      • loop ↔ vectorized ↔ direct Helmut 2017-08-20 14:40
        • loop ↔ vectorized ↔ direct ElMaestro 2017-08-20 15:22
          • loop ↔ vectorized ↔ direct Helmut 2017-08-20 16:23
            • loop ↔ vectorized ↔ direct ElMaestro 2017-08-20 17:22
  • The n ext crackpot iteration ElMaestro 2017-08-19 20:04
    • The n ext crackpot iteration Helmut 2017-08-20 02:20
  • The ultimate crackpot iteration! ElMaestro 2017-08-20 14:35
    • The ultimate crackpot iteration! Helmut 2017-08-20 15:11
      • The ultimate crackpot iteration! ElMaestro 2017-08-20 15:28
        • The ultimate crackpot iteration! Helmut 2017-08-20 16:06
          • The ultimate crackpot iteration! ElMaestro 2017-08-20 16:15
            • The ultimate crackpot iteration! Helmut 2017-08-20 18:58
              • The ultimate crackpot iteration! ElMaestro 2017-08-20 19:32
                • Suggested code ElMaestro 2017-08-21 18:13
                  • Nitpicker! Helmut 2017-08-22 13:33
                    • Nitpicker! ElMaestro 2017-08-22 17:27
                      • Nitpicker! Helmut 2017-08-22 17:49
                        • Nitpicker! ElMaestro 2017-08-22 17:59
                          • Nitpicker! Helmut 2017-08-22 19:15
                            • Benchmark code ElMaestro 2017-08-22 22:29
                              • Benchmark code Helmut 2017-08-23 01:48