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over-dispersed Poisson with lmer -- a trick, with a catch?

Thu, Jul 16, 2009 10:07 AM

Hi,

Instead of "tricks", why don't you just fit a negative binomial mixed
model. That should deal with the over-dispersion. You can do this with
AD Model Builder's random effects package which is now freely available
at http://admb-project.org.

    Dave

David A. Fournier
P.O. Box 2040,
Sidney, B.C. V8l 3S3
Canada
Phone/FAX 250-655-3364
http://otter-rsch.com

Thread (5 messages)

David Atkins over-dispersed Poisson with lmer -- a trick, with a catch? Jul 16 Ben Bolker over-dispersed Poisson with lmer -- a trick, with a catch? Jul 16 Ben Bolker over-dispersed Poisson with lmer -- a trick, with a catch? Jul 16 David Atkins over-dispersed Poisson with lmer -- a trick, with a catch? Jul 16 dave fournier over-dispersed Poisson with lmer -- a trick, with a catch? Jul 16