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Document Details :

Title: Fixed versus Random Effects in Poisson Regression Models for Claim Counts
Subtitle: A Case Study with Motor Insurance
Author(s): BOUCHER, Jean-Philippe , DENUIT, Michel
Journal: ASTIN Bulletin
Volume: 36    Issue: 1   Date: May 2006   
Pages: 285-301
DOI: 10.2143/AST.36.1.2014153

Abstract :
This paper examines the validity of some stylized statements that can be found in the actuarial literature about random effects models.Specifically,the actual meaning of the estimated parameters and the nature of the residual heterogeneity are discussed. A numerical illustration performed on a Belgian motor third party liability portfolio supports this discussion.