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Count Data Models with Unobserved Heterogeneity: An Empirical Likelihood Approach

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  • Stefan Boes

    ()
    (Socioeconomic Institute, University of Zurich)

Abstract

As previously argued, the correlation between included and omitted regressors generally causes inconsistency of standard estimators for count data models. Using a specific residual function and suitable instruments, a consistent generalized method of moments estimator can be obtained under conditional moment restrictions. This approach is extended here by fully exploiting the model assumptions and thereby improving efficiency of the resulting estimator. Empirical likelihood estimation in particular has favorable properties in this setting compared to the two-step GMM procedure, which is demonstrated in a Monte Carlo experiment. The proposed method is applied to the estimation of a cigarette demand function.

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File URL: http://www.soi.uzh.ch/research/wp/2007/wp0704.pdf
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Bibliographic Info

Paper provided by Socioeconomic Institute - University of Zurich in its series SOI - Working Papers with number 0704.

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Length: 26 pages
Date of creation: Mar 2007
Date of revision:
Publication status: published in Scandinavian Journal of Statistics 37(3), pp. 382-402, 2010
Handle: RePEc:soz:wpaper:0704

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Keywords: nonparametric likelihood; poisson model; nonlinear instrumental variables; optimal instruments; approximating functions; semiparametric efficiency;

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References

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Citations

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Cited by:
  1. Falkinger, Josef, 2008. "Between Agora and Shopping Mall," IZA Discussion Papers 3524, Institute for the Study of Labor (IZA).
  2. Dario Sacco & Armin Schmutzler, 2008. "All-Pay Auctions with Negative Prize Externalities: Theory and Experimental Evidence," SOI - Working Papers 0806, Socioeconomic Institute - University of Zurich.
  3. Halbheer, Daniel & Fehr, Ernst & Goette, Lorenz & Schmutzler, Armin, 2009. "Self-reinforcing market dominance," Games and Economic Behavior, Elsevier, vol. 67(2), pages 481-502, November.
  4. Rafael Lalive & Armin Schmutzler, 2005. "Exploring the Effects of Competition for Railway Markets," SOI - Working Papers 0511, Socioeconomic Institute - University of Zurich, revised Apr 2007.
  5. Sandra Hanslin, 2008. "The effect of trade openness on optimal government size under endogenous firm entry," SOI - Working Papers 0802, Socioeconomic Institute - University of Zurich.
  6. Dennis L. Gärtner, 2010. "Monopolistic screening under learning by doing," RAND Journal of Economics, RAND Corporation, vol. 41(3), pages 574-597.
  7. Stefan Boes, 2007. "Nonparametric Analysis of Treatment Effects in Ordered Response Models," SOI - Working Papers 0709, Socioeconomic Institute - University of Zurich.
  8. Dario Sacco & Armin Schmutzler, 2008. "Competition and Innovation: An Experimental Investigation," SOI - Working Papers 0807, Socioeconomic Institute - University of Zurich.
  9. Maurus Rischatsch & Maria Trottmann, 2009. "Physician dispensing and the choice between generic and brand-name drugs – Do margins affect choice?," SOI - Working Papers 0911, Socioeconomic Institute - University of Zurich.
  10. Lukas Steinmann & Harry Telser & Peter Zweifel, 2005. "The Impact of Aging on Future Healthcare Expenditure," SOI - Working Papers 0510, Socioeconomic Institute - University of Zurich, revised Dec 2006.
  11. Maurus Rischatsch, 2009. "Simulating WTP Values from Random-Coefficient Models," SOI - Working Papers 0912, Socioeconomic Institute - University of Zurich.
  12. Ilja Neustadt & Peter Zweifel, 2009. "Economic Well-Being, Social Mobility, and Preferences for Income Redistribution: Evidence from a Discrete Choice Experiment," SOI - Working Papers 0909, Socioeconomic Institute - University of Zurich, revised Jan 2010.
  13. Adrian Bruhin, 2008. "Stochastic Expected Utility and Prospect Theory in a Horse Race: A Finite Mixture Approach," SOI - Working Papers 0803, Socioeconomic Institute - University of Zurich.
  14. Helga Fehr-Duda & Adrian Bruhin & Thomas Epper & Renate Schubert, 2007. "Rationality on the Rise: Why Relative Risk Aversion Increases with Stake Size," SOI - Working Papers 0708, Socioeconomic Institute - University of Zurich, revised Feb 2008.
  15. Dennis Gaertner, 2007. "Why Bayes Rules: A Note on Bayesian vs. Classical Inference in Regime Switching Models," SOI - Working Papers 0719, Socioeconomic Institute - University of Zurich.
  16. Johannes Schoder & Peter Zweifel, 2008. "Managed Care Konzepte und Lösungsansätze– Ein internationaler Vergleich aus schweizerischer Sicht," SOI - Working Papers 0801, Socioeconomic Institute - University of Zurich.

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