search for: jhobert

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2002 Feb 13
0
glmms with negative binomial responses
...cking factor, and (wait for it) negative binomial count distributions as the response variable. As far as I can tell, the currently available R offerings (glmmGibbs, glmmPQL in MASS, and Jim Lindsey's glmm code) aren't quite up to this. From what I have read (e.g. http://www.stat.ufl.edu/~jhobert/papers/nb7.ps), SAS PROC NLMIXED seems like the best way to go. I can go do that if I have to, but I'd prefer to do it in R if that seems feasible. Some playing around with simulations that mimic the structure of the data and using various combinations of glmmPQL, glm.nb, quasipoisson famil...