Re: [R] doing zero inflated glmm for count data with fmr

Thank you very much Ben. I took you advice and run the lmer model with family="quasipoisson" and got sigma~10. I guess this means that the data has overdispertion but not too high (>15) for me to must use zero inflated model. Am I right? I will also post to the r-sig-mixed-models specialty list..

Re: [R] doing zero inflated glmm for count data with fmr

levyofi wrote: > > Hello R users, > Doing My PhD I collected count data which I believe is zero inflated. I > have run a statistical model with lmer and family=poisson and got > summary(model)@sigma=1 so I believe there is no overdispertion. > You have been misled. sigma is set to 1 by def

[R] doing zero inflated glmm for count data with fmr

Hello R users, Doing My PhD I collected count data which I believe is zero inflated. I have run a statistical model with lmer and family=poisson and got summary(model)@sigma=1 so I believe there is no overdispertion. I would like to use the fmr function from the 'gnlm' library but I just cannot f