search for: pp459

...hey are most often used for continuous response variables they work perfectly well for counts. Stata 7.0 does the Newey-West estimator for generalised linear models, which may be what you had heard about. These and related sandwich-type estimators are reviewed by Lumley & Heagerty (JRSSB 1999,pp459-477). I have R code, but again only for generalised linear models, not for zero-inflation models." Thomas added: - The Poisson-Normal model leads to a loglinear marginal model that can be fitted by glm(), and I would expect something similar to be true of the zero-inflation model. This mean...