"information"? [Power / Sample Size]

posted by ElMaestro  – Denmark, 2016-09-19 14:44 (3143 d 03:15 ago) – Posting: # 16648
Views: 6,258

Hi DanielR,

❝ I need to determine a sample size for a parallel design, but only have information from 2x2 designs.


(coloring by me)

If information includes the data listing then it is actually not difficult: Just extract either the period 1 data or the period 2 data, and do an evalution as though this was a parallel trial.
The principle in this approach has a troubled past as it was used to evaluate BE pivotally when there were significant sequence effects in 222BE trials, and it never caught on with regulators. That is fortunately not your dilemma here. For your purpose you can get a reasonably qualified idea of the total variabilities for T and R.

Pass or fail!
ElMaestro

Complete thread:

UA Flag
Activity
 Admin contact
23,424 posts in 4,927 threads, 1,673 registered users;
90 visitors (0 registered, 90 guests [including 1 identified bots]).
Forum time: 17:59 CEST (Europe/Vienna)

There are two possible outcomes: if the result confirms the
hypothesis, then you’ve made a measurement. If the result is
contrary to the hypothesis, then you’ve made a discovery.    Enrico Fermi

The Bioequivalence and Bioavailability Forum is hosted by
BEBAC Ing. Helmut Schütz
HTML5