Bioequivalence and Bioavailability Forum • Type III again

Type III again [🇷 for BE/BA]

posted by ElMaestro – Denmark, 2015-06-12 14:18 (3571 d 16:19 ago) – Posting: # 14949
Views: 14,228

Dear d_labes,

❝ So what can we suggest to Yung-jin w.r.t. the ANOVA?

❝ SAS way, Phoenix way, R's drop1() (which doesn't work for sequence) or what else?

If the aim is to reproduce SAS then yes, we need to update the anova table with F= MS(Seq) / MS(Subj).
The idea of testing MS(Seq) against the MS(Subj) is still just a postulate. One that of course makes people invest heart and sould in it, but still a postulate.
Drop1 gives you type III SS, plain and simple with no questions asked. Type III is when the least term is left out and hence it can rightfully be claimed that by the shear defintion of type III the Seq effect has to be nil.

So, I am not so worried about drop1 scientifically. I am only worried about assessors who think that if it doesn't give the same result as SAS then it is wrong. Why don't those assessors instead ask why the sequence effect with type III is not nil with SAS. Much more relevant :-D

—
Pass or fail!
ElMaestro

Complete thread:

R code for lm.mod does not make sense dmfisher 2015-06-09 03:55 [🇷 for BE/BA]
- R code for lm.mod does not make sense yjlee168 2015-06-09 17:57
  - R code for lm.mod does not make sense ElMaestro 2015-06-09 21:07
    - R code for lm.mod does not make sense yjlee168 2015-06-10 11:34
      - R code for lm.mod does not make sense ElMaestro 2015-06-10 14:22
        
        R code for lm.mod does not make sense yjlee168 2015-06-11 09:44
        
        Reference datasets Helmut 2015-06-11 11:50
        
        Reference datasets ElMaestro 2015-06-11 12:01
        
        Reference datasets yjlee168 2015-06-11 22:16
        Type III kuddel muddel d_labes 2015-06-12 09:04
        
        Type III kuddel muddel Helmut 2015-06-12 11:27
        
        ANOVA F-test results and regulators d_labes 2015-06-12 15:23
        
        ANOVA F-test results and regulators ElMaestro 2015-06-12 15:29
        
        ANOVA F-test results and regulators d_labes 2015-06-12 15:44
        
        ANOVA F-test results and regulators ElMaestro 2015-06-12 15:52
        
        Type III againElMaestro 2015-06-12 12:18
        
        SAS OT d_labes 2015-06-12 15:32
        
        Reference datasets yjlee168 2015-06-11 19:56
        Test hypothesis of using Type I/III MS... yjlee168 2015-06-12 09:01
  - R code for lm.mod does not make sense dmfisher 2015-06-10 01:38