Creel, Michael D.; Farell, Montserrat - Departament d'Economia i Història Econòmica, … - 2001
lines of Cameron and Johansson's Poisson polynomial model, but using a negative binomial baseline model, is introduced. We … apply these models, as well a semiparametric Poisson, hurdle semiparametric Poisson, and finite mixtures of negative … binomial models to six measures of health care usage taken from the Medical Expenditure Panel survey. We conclude that most of …