[ADMB Users] zero-inflated poisson output

H. Skaug hskaug at gmail.com
Wed Aug 8 14:48:14 PDT 2012

Hi Daisy,

Can you please post this question to the R list:
r-sig-mixed-models at r-project.org
Qustions about glmmADMB have been redirected.


On Fri, Jul 20, 2012 at 1:25 PM, Brickhill, Daisy <r01db11 at abdn.ac.uk> wrote:
> Hi all,
> I am using the glmm.admb package to fit a zero-inflated poisson mixed model.
> What I would like to know is why when I use summary(model) the output only
> gives (what appears to be) the count process result. I.e. the binomial
> process, that deals with the zero/non zero is not shown. If you use
> zeroinfl() from library(pscl) it gives both ‘Count model coefficients
> (poisson with log link)’ AND ‘Zero-inflation model coefficients (binomial
> with logit link)’. The glmm.admb output seems to give only the count model
> coefficients. I am using glmm.admb rather than zeroinfl() because I have a
> random effect. Can anyone tell me whether is a way I could extract the
> zero-inflation model coefficients from a glmm.admb model?
> Many thanks,
> Daisy
> The University of Aberdeen is a charity registered in Scotland, No SC013683.
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