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immuno
2007 Mar 22
0
accounting for overdispersion in poisson distribution with lmer procedure
...istribution but I'm not sure if this is
sufficient to account for overdispersion. Actually the results are not very
different to what I get when specifying a poisson distribution although my
data are clearly overdispersed.
this my model:
>model <- lmer(NB ~ T + volume + (G|col) , data=immuno15,
>family=quasipoisson)
where
- NB is bacterial count in haemolymph of ants 10h after bacteria
injection(measure of immunocompetence)
- T is the treatment applied to ants
- volume is the volume of haemolymph sample from ants
- col is the colony of origin of ants, which is a random factor
I kno...