Negative binomial and mixed Poisson regression
نویسنده
چکیده
A number of methods have been proposed for dealing with extra-Poisson variation when doing regression analysis of count data. This paper studies negative-binomial regression models and examines efficiency and robustness properties of inference procedures based on them. The methods are compared with quasilikelihood methods. RESUME Plusieurs mkthodes ont ktk propokes en vue de traiter le probltme de la variation extrapoissonnienne dans une analyse de regression pour donnkes de dknombrement. Cet article a pour objet l’etude de modtles de rkgression binomiale nkgative et se penche sur les propriktks d’efficacite et de robustesse des mtthodes infirentielles dkcoulant des mod&les. Ces dernitres sont comparkes aux mkthodes de quasi-vraisemblancce.
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