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Statistical Papers

, Volume 58, Issue 2, pp 485–504 | Cite as

A conditional count model for repeated count data and its application to GEE approach

  • Rajib Dey
  • M. Ataharul Islam
Regular Article
  • 272 Downloads

Abstract

In this article, a conditional model is proposed for modeling longitudinal count data. The joint density is disintegrated into the marginal and conditional densities according to the multiplication rule. It allows both positive and negative correlation among variables, which most multivariate count models do not possess. To show the efficiency of the proposed model for count data, we have applied to the generalized estimating equations and the inverse Fisher information matrix is compared with the covariance matrix from estimating equations. A simulation experiment is displayed and an application of the model to divorce data is presented. In addition, a comparison of conditional model and bivariate Poisson model proposed by Kocherlakota and Kocherlakota has shown using simulated data.

Keywords

Count data Generalized estimating equations Conditional probability 

Notes

Acknowledgments

We are grateful to the HRS (Health and Retirement Study) which is sponsored by the National Institute of Aging (Grant Number NIA U01AG09740) and conducted by the University of Michigan.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2015

Authors and Affiliations

  1. 1.Department of StatisticsHajee Mohammad Danesh Science & Technology UniversityDinajpurBangladesh
  2. 2.Department of Applied StatisticsEast West UniversityDhakaBangladesh

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