Bioequivalence and Bioavailability Forum

power2.TOST() [Power / Sample Size]

posted by Helmut  – Vienna, Austria, 2014-06-30 14:02 (4377 d 13:47 ago) – Posting: # 13170
Views: 18,597

Dear Detlew,

❝ […] "The formulas used assume balanced studies, i.e. equal number of subjects in the (sequence) groups."

❝ May be I should improve the documentation with a more direct reference to power2.TOST() and a warning.

Yes, please! Though I knew power2.TOST() – introduced in Dec 2011 – in the heat of battle I forgot using it.

BTW, FARTSSIE17 reports for n=67 a power of 0.9011206.

power2.TOST(CV=0.3005, theta0=0.93, n=c(34,33), design="2x2", method="nct")
[1] 0.9010638

Close, but not identical.

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


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Science Quotes

Complete thread:

• Sample size for replicate design partial AUC AngusMcLean 2014-06-25 02:11 
  • sampleN.RSABE() Helmut 2014-06-25 02:53
    • sampleN.RSABE() AngusMcLean 2014-06-25 13:42
      • sampleN.RSABE() Helmut 2014-06-25 15:02
        • sampleN.RSABE() AngusMcLean 2014-06-25 20:05
          • sampleN.RSABE() Helmut 2014-06-25 21:29
            • sampleN.RSABE() AngusMcLean 2014-06-27 17:37
        • power2.TOST() d_labes 2014-06-30 09:47
          • power2.TOST()Helmut 2014-06-30 12:02
            • power2.TOST() ElMaestro 2014-06-30 12:31
              • Elementary, my dear Watson! Helmut 2014-06-30 12:43
                • Elementary, my dear Watson! ElMaestro 2014-06-30 13:07