[R] Mixed-effects model for overdispersed count data?

[dave fournier]

According to the documentation for glmmADMB if you fit
your model with a statment like


fit =glmm.admb(y~Base*trt+Age+Visit, ...  data=epil2,family="nbinom")

and that the parameter estimates are in

    fit$b  while their estimated standard deviations are
in

     fit$stdbeta

so presumably  p values can be constructed from the
quotient

      fit$b/fit$stdbeta

by assuming a t distribution with (somehow) the correct
degrees of freedom.