Group effect commonly not relevant [Software]

posted by AngusMcLean – USA, 2014-07-07 00:52 (3941 d 21:46 ago) – Posting: # 13222
Views: 26,810

Hello Helmut: Yes; I did see that Formulation not Treatment later after lunch, but it still did not work. Then following your direction about Group being a classification variable (and including subject in model) I did get it to work.

Dependent hyothesis     NumDF Denomin     Fstat       p value
Ln(AUC)   int               1   64    11226.673       0
Ln(AUC)   Group             1   64        0.006028186 0.93835554
Ln(AUC)   Sequence          1   64        3.4513852   0.067800018
Ln(AUC)   Group*Sequence    1   64        0.000321727 0.9857451
Ln(AUC)   Group*Period      2   64        0.064946799 0.937179
Ln(AUC)   Formulation       1   64        0.36503556  0.54785867
Ln(AUC)   Formulation*Group 1   64        0.002630007 0.95925927

The formulation by group interaction p value was 0.95 for this composed data set.

Many thanks and also your sample size program in R works well: I have almost zero experience in R, but the reference you provided was easy to follow.


Here is the setup I used in Phoenix: Subject has to be mapped to get it to work (see link below)
http://screencast.com/t/EpJVIvdBr

Angus


Edit: BBCoded and a later post merged. [Helmut]

Complete thread:

UA Flag
Activity
 Admin contact
23,424 posts in 4,927 threads, 1,670 registered users;
25 visitors (0 registered, 25 guests [including 9 identified bots]).
Forum time: 22:38 CEST (Europe/Vienna)

The combination of some data and an aching desire
for an answer does not ensure that a reasonable answer
can be extracted from a given body of data.    John W. Tukey

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