Bioequivalence and Bioavailability Forum • Fixed effects model: changing the F, p values

Fixed effects model: changing the F, p values [Two-Stage / GS Designs]

posted by ElMaestro – Denmark, 2016-10-10 22:10 (2747 d 22:18 ago) – Posting: # 16711
Views: 35,026

Hi there,

❝ What bothers me is that Group effect is not equal in R and PHX, cannot figure out the reason

Type III SS for Group may be somewhat challenging because is a between-factor like Sequence. I am OoO so cannot tests it well, but I reckon you'd need to play around with models without subject and sequence, in order to get something for Group.

This post is untested and just reflecting my thoughts. It may not in anyway reflect realities at all (like most of my post in general).

Actually if some of the R experts out there see this post, then I am hereby suggesting you to write a general extension to drop1 which produces meaningful (that means informative, if anyone wonders) SS's and F-tests for models where there are multiple betweens.
The ideal candidate for this drop1 extension would -purely hypothetically- be a statistical expert with mahatma status who has plenty spare time because he recently went into retirement. But of course, such people are hard to find.

Hötzi, do you think any such person exists on the planet or is it just wishful thinking?!??

—
Pass or fail!
ElMaestro

Complete thread:

Potvin C in the EU Helmut 2013-04-16 17:40
- Potvin C in the EU ElMaestro 2013-04-17 02:31
  - Potvin C in the EU Helmut 2013-04-17 12:23
    - 2 Groups model FDA d_labes 2013-04-17 13:10
      - 2 Groups model FDA Helmut 2013-04-17 16:37
        
        Group effects obsolete? d_labes 2013-04-18 09:55
        
        Group effects FDA/EMA Helmut 2013-04-19 14:34
        
        Group effects FDA/EMA mittyri 2014-08-21 15:34
        
        Group effects FDA/EMA ElMaestro 2014-08-21 17:31
        
        Group effects EMA mittyri 2014-10-01 11:25
        
        Group effects EMA ElMaestro 2014-10-01 11:31
        Group effects EMA Helmut 2014-10-01 13:24
        
        Group effects EMA VStus 2016-10-06 22:06
        
        Group effects EMA ElMaestro 2016-10-07 12:45
        
        Group effects EMA mittyri 2016-10-07 15:06
        
        Fixed effects model with Group term mittyri 2016-10-09 13:27
        
        Fixed effects model: changing the F, p values mittyri 2016-10-10 18:33
        
        Fixed effects model: changing the F, p valuesElMaestro 2016-10-10 20:10
        
        Fixed effects model: changing the F, p values Helmut 2016-10-11 00:17
        Holy War of type III d_labes 2016-10-11 13:17
        
        Significance of Group effect in Russia: why the type III is so 'important' mittyri 2016-10-11 15:07
        
        Fixed effects model: changing the F, p values zizou 2016-10-11 01:06
        
        FDA group model in R mittyri 2016-10-11 13:43
        
        FDA group model in R ElMaestro 2016-10-12 01:07
        FDA group model in R VStus 2016-10-17 15:32
        
        FDA group model in R ElMaestro 2016-10-17 18:58
        
        FDA group model in R VStus 2016-10-20 13:57
        
        Fixed effects model with Group term VStus 2016-10-20 13:54
        
        Group effects FDA/EMA zizou 2016-12-31 02:54
        
        Group effects FDA/EMA Helmut 2017-06-03 14:57
        
        2 Groups model FDA hiren379 2013-08-22 14:32
        
        Homework Helmut 2013-08-23 11:53