Journal of Population Economics

, Volume 10, Issue 3, pp 273–283

Modeling household fertility decisions with generalized Poisson regression

  • Weiren Wang
  • Felix Famoye


This paper models household fertility decisions by using a generalized Poisson regression model. Since the fertility data used in the paper exhibit under-dispersion, the generalized Poisson regression model has statistical advantages over both standard Poisson and negative binomial regression models, and is suitable for analysis of count data that exhibit either over-dispersion or under-dispersion. The model is estimated by the method of maximum likelihood. Approximate tests for the dispersion and goodness-of-fit measures for comparing alternative models are discussed. Based on observations from the Panel Study of Income Dynamics of 1989 interviewing year, the empirical results support the fertility hypothesis of Becker and Lewis (1973).

JEL classification: C25 J13 
Key words: Fertility decision generalized Poisson model dispersion goodness-of-fit 


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Copyright information

© Springer-Verlag Berlin Heidelberg 1997

Authors and Affiliations

  • Weiren Wang
    • 1
  • Felix Famoye
    • 2
  1. 1.Department of Economics, University of Kentucky, Lexington, KY 40506-0034, USA (e-mail:
  2. 2.Department of Mathematics, Central Michigan University, Mt. Pleasant, MI 48859, USAUS

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