Bioequivalence and Bioavailability Forum • ANOVA only

ANOVA only - no doubts [Regulatives / Guidelines]

posted by Helmut – Vienna, Austria, 2010-02-11 00:41 (5607 d 13:23 ago) – Posting: # 4748
Views: 24,165

Hi ElMaestro!

❝ "The terms to be used in the ANOVA model are usually sequence, subject within sequence, period and formulation. Fixed effects, rather than random effects, should be used for all terms."

❝ Implies no more mixed effect modeling?

See the comment-document (linked here, page 138):

One objective of the new guidance was to completely standardise the method of analysis. While mixed models are generally useful, for bioequivalence ANOVA is considered adequate. […] a mixed linear models approach would not be acceptable, and subjects with valid data for only one of the two treatments should be excluded. No change. The phrase "or equivalent parametric method" removed to make clear that we are insisting on ANOVA.

(my emphasis) I lost also in my comment on lines 500-501/574-576 (page 140, top) – and of course on nonparametrics (page 141, top). ANOVA only. Full stop.

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Complete thread:

EMA BE guideline - final version Ohlbe 2010-01-28 18:31 [Regulatives / Guidelines]
- Final version published Helmut 2010-01-29 14:29
  - Final version published ElMaestro 2010-01-29 17:02
    - Statistix Helmut 2010-01-29 17:30
      - Statistix ElMaestro 2010-01-29 18:11
    - Calories ;-) Helmut 2010-01-29 19:22
      - Calories ;-) ElMaestro 2010-01-29 20:43
        
        Calories ;-) Helmut 2010-01-29 21:08
      - Variable calories d_labes 2010-02-01 12:05
    - ANOVA only - no doubtsHelmut 2010-02-10 23:41
      - ANOVA only - no doubts ElMaestro 2010-02-12 21:09
  - Final EMA oracle d_labes 2010-02-01 11:53
    - Final EMA oracle Helmut 2010-02-01 12:28
    - Final EMA oracle ElMaestro 2010-02-01 12:50
      - More then two EMA oracles d_labes 2010-02-01 13:30
        
        Less of an issue ElMaestro 2010-02-01 15:29
        
        Less or More of an issue d_labes 2010-02-01 16:53
        
        Less or More of an issue ElMaestro 2010-02-01 17:22
        
        Effective with 1 Aug 2010 Helmut 2010-02-02 00:55
        Bias? ElMaestro 2010-02-04 11:27
        
        Bias? Helmut 2010-02-05 02:03
        
        Bias? ElMaestro 2010-02-05 09:33
        
        Bias? Helmut 2010-02-05 10:21
        
        Bias? d_labes 2010-02-05 13:59
        Bias? ElMaestro 2010-02-05 16:00
        
        Bias? Helmut 2010-02-05 19:14
      - Final EMA oracle Helmut 2010-02-01 13:43
        
        Final EMA oracle ElMaestro 2010-02-01 14:54
        
        Final EMA oracle d_labes 2010-02-01 15:20
        
        Teaching Helmut 2010-02-01 16:07
  - Cmin really gone? tmax reappeared? d_labes 2010-02-01 14:02
    - Cmin really gone. tmax reappeared - but how? Helmut 2010-02-01 23:30
  - Interpol or not d_labes 2010-02-01 14:52
    - Interpol! Helmut 2010-02-02 00:02
      - Interpol! ray_be 2010-02-03 18:31
        
        WinNonlin/Phoenix extrapolation to t=tau Helmut 2010-02-03 20:26
  - Meta-analysis Helmut 2010-02-07 17:41
  - Final version published Panks.79 2010-03-08 07:22
    - Cmin for MR-formulations? Helmut 2010-03-08 18:16
      - Cmin for MR-formulations? Marcel 2010-04-23 10:09
        
        MR-Guideline? Helmut 2010-04-23 12:34
- Overview of comments published Helmut 2010-02-10 18:33
  - Comments commented d_labes 2010-02-11 08:19
  - Definition of Cmin by EMEA Ravi 2010-03-13 12:05
    - The EMA’s Cmin & WinNonlin Helmut 2010-03-13 12:52