Re: [R-sig-eco] glmer , quasipoisson and standard errors of the coefficients

2008-09-04 Thread Albert Romero
Thank you all for the answers. I'll be careful with this kind of models till I learn how they work... By the way, I have realized that, comparing a Poisson model with a quasi-Poisson model, the estimated SE of the coefficients in the quasi-Poisson model are the SE of the Poisson model

Re: [R-sig-eco] glmer , quasipoisson and standard errors of the coefficients

2008-09-01 Thread Ben Bolker
Albert Romero wrote: Hello, I am trying to simplify backwards a mixed effects model, using lmer function from lme4 package. As my data are species numbers and there exists overdisperison, I think appropriate to use glmer function with error family quasipoisson. I compare one model with its