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 times
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 sim
>Date: Sun, 31 Aug 2008 18:00:12 +0200
>From: Albert Romero <[EMAIL PROTECTED]>
>Subject: [R-sig-eco] glmer ,quasipoisson and standard errors of the
> coefficients
>To: r-sig-ecology@r-project.org
>Message-ID: <[EMAIL PROTECTED]>
>Content-Type: tex
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 simplification
through l