[R] Mixed effects multinomial regression and meta-analysis

[David Duffy]

> I just realized that the example I used in my previous posting today is
> incorrect because it is a binary response, not a multilevel response
> (small, medium, large) such as my real life problem has.  I apologize
> for the confusion.  The example is incorrect, but the multinomial
> problem is real.

Your data looks like it might be better considered as ordinal.
Whitehead and Whitehead discuss one proprtional odds random effects
approach (for a single binary covariate) in Statist Med 1991;
10:1665-1677, which is easy to implement.  The BUGS manual has an
example of random effects metaanalysis that you could expand.  You could
even partition out the studies using the party package (I believe it
does an ordinal logistic).

David Duffy.
-- 
| David Duffy (MBBS PhD)                                         ,-_|\
| email: davidD at qimr.edu.au  ph: INT+61+7+3362-0217 fax: -0101  /     *
| Epidemiology Unit, Queensland Institute of Medical Research   \_,-._/
| 300 Herston Rd, Brisbane, Queensland 4029, Australia  GPG 4D0B994A v