[R] Ordinal mixed model

[ONKELINX, Thierry]

Dear Patrick,

You can fit such a model with the MCMCglmm package. Have a look at the vignette of that package.

install.packages("MCMCglmm")
vignette("CourseNotes", package = "MCMCglmm")

But I'm affraid that this will require some rockclimbing upon the learning curve if you are a R novice.

HTH,

Thierry

----------------------------------------------------------------------------
ir. Thierry Onkelinx
Instituut voor natuur- en bosonderzoek
team Biometrie & Kwaliteitszorg
Gaverstraat 4
9500 Geraardsbergen
Belgium

Research Institute for Nature and Forest
team Biometrics & Quality Assurance
Gaverstraat 4
9500 Geraardsbergen
Belgium

tel. + 32 54/436 185
Thierry.Onkelinx op inbo.be
www.inbo.be

To call in the statistician after the experiment is done may be no more than asking him to perform a post-mortem examination: he may be able to say what the experiment died of.
~ Sir Ronald Aylmer Fisher

The plural of anecdote is not data.
~ Roger Brinner

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 Tukey
  

> -----Oorspronkelijk bericht-----
> Van: r-help-bounces op r-project.org 
> [mailto:r-help-bounces op r-project.org] Namens Patrick Walsh
> Verzonden: woensdag 22 september 2010 18:29
> Aan: r-help op r-project.org
> Onderwerp: [R] Ordinal mixed model
> 
> Hello,
> I am trying to build a generalised linear mixed model.  My 
> dependent variable is ordinal.  I have a random factor (7 
> individuals), and a repeated measure where the dependent 
> variable was measured three times for each of four attempts 
> (so the repeats are nested).  I also have a few covariates.  
> I am a complete novice in R, being used to using SPSS.  SPSS 
> lets me build an ordinal model with repeated measures, but 
> can't include a random factor.  So that is really the hurdle, 
> is this possible in R.  And is there a way to do this that 
> could be explained to someone who has no experience in R?
> Any help would be greatly appreciated.
> Kind Regards,
> ptwal
> 
> 
> 
> 
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