[R-sig-ME] lme4, lme4a, and overdispersed distributions (again)
davidD at qimr.edu.au
Thu Jun 24 23:31:59 CEST 2010
On Thu, 24 Jun 2010, Jeffrey Evans wrote:
> What do you think of the suggestion that a beta-binomial mixture
> distribution could be used to model overdispersed binomial data?
> Would this be a techinically correct and logistically feasible solution?
If you have a relatively simple setup for the random effects, then the
nonparametric ML models can be used for overdispersed data: these allow an
arbitrary distribution for the random effects (as a mixture of
distributions). See the npmlreg package.
| 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 \_,-._/
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