Have you considered using glm() with family = "quasipoisson" or
family = quasibinomial ? I know from experience that the quasipoisson
choice reports an index of dispersion.
?family
--
David Winsemius
On Oct 12, 2008, at 4:55 AM, Fucikova, Eva wrote:
Dear All,
I am working with linear mixed-effects models using the lme4 package
in R. I created a model using the lmer function including some main
effects, a three-way interaction and a random effect.
Because I work with a binomial and poisson distribution, I want to
know whether there is overdispersion in my data or not. Does anybody
know how I can retrieve this information from R?
Thank you in advance,
Eva Fucikova
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