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Consistent Estimation Of Zero‐Inflated Count Models

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  • Kevin E. Staub
  • Rainer Winkelmann

Abstract

Applications of zero-inflated count data models have proliferated in health economics. However, zero-inflated Poisson or zero-inflated negative binomial maximum likelihood estimators are not robust to misspecification. This paper proposes Poisson quasi-likelihood estimators as an alternative. These estimators are consistent in the presence of excess zeros without having to specify the full distribution. The advantages of the Poisson quasi-likelihood approach are illustrated in a series of Monte Carlo simulations and in an application to the demand for health services.
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Suggested Citation

  • Kevin E. Staub & Rainer Winkelmann, 2013. "Consistent Estimation Of Zero‐Inflated Count Models," Health Economics, John Wiley & Sons, Ltd., vol. 22(6), pages 673-686, June.
  • Handle: RePEc:wly:hlthec:v:22:y:2013:i:6:p:673-686
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    References listed on IDEAS

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    Cited by:

    1. 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.
    2. Damien BESANCENOT & Kim HUYNH & Francisco SERRANITO, 2015. "Co-Authorship and Individual Research Productivity in Economics: Assessing the Assortative Matching Hypothesis," LEO Working Papers / DR LEO 2236, Orleans Economics Laboratory / Laboratoire d'Economie d'Orleans (LEO), University of Orleans.
    3. Prehn, Sören & Brümmer, Bernhard, 2011. "Estimation issues in disaggregate gravity trade models," DARE Discussion Papers 1107, Georg-August University of Göttingen, Department of Agricultural Economics and Rural Development (DARE).
    4. Chakraborty, Tanika & Mirkasimov, Bakhrom & Steiner, Susan, 2015. "Transfer behavior in migrant sending communities," Journal of Comparative Economics, Elsevier, vol. 43(3), pages 690-705.
    5. Fatima Olanike Kareem & Olayinka Idowu Kareem, 2014. "Specification and Estimation of Gravity Models: A Review of the Issues in the Literature," RSCAS Working Papers 2014/74, European University Institute.
    6. Pandit, Mahesh & Paudel, Krishna P. & Hinson, Roger A., 2012. "Intensity of Integrated Pest Management (IPM) Practices Adoption by U.S. Nursery Crop Producers," 2012 Annual Meeting, August 12-14, 2012, Seattle, Washington 124942, Agricultural and Applied Economics Association.
    7. Pandit, Mahesh & Paudel, Krishna P. & Williams, Deborah, 2014. "Effect of Remittance on Intensity of Agricultural Technology Adoption in Nepal," 2014 Annual Meeting, February 1-4, 2014, Dallas, Texas 162692, Southern Agricultural Economics Association.
    8. Gregori Baetschmann & Rainer Winkelmann, 2012. "Modelling zero-inflated count data when exposure varies: with an application to sick leave," ECON - Working Papers 061, Department of Economics - University of Zurich.
    9. Prehn, Soren & Brümmer, Bernhard & Glauben, Thomas, 2012. "Structural Gravity Estimation & Agriculture," 2012: New Rules of Trade?, December 2012, San Diego, California 142765, International Agricultural Trade Research Consortium.
    10. Damien Besancenot & Kim V. Huynh & Francisco Serranito, 2015. "Determinant of Co-authorship in economics: the French case," Economics Bulletin, AccessEcon, vol. 35(1), pages 680-693.
    11. Antonio J. Sáez-Castillo & Antonio Conde-Sánchez, 2017. "Detecting over- and under-dispersion in zero inflated data with the hyper-Poisson regression model," Statistical Papers, Springer, vol. 58(1), pages 19-33, March.
    12. Kareem, Fatima Olanike & Martinez-Zarzoso, Inmaculada & Brümmer, Bernhard, 2016. "Fitting the Gravity Model when Zero Trade Flows are Frequent: a Comparison of Estimation Techniques using Africa's Trade Data," Discussion Papers 230588, Georg-August-Universitaet Goettingen, GlobalFood, Department of Agricultural Economics and Rural Development.
    13. Esposito, Piero, 2017. "Trade creation, trade diversion and imbalances in the EMU," Economic Modelling, Elsevier, vol. 60(C), pages 462-472.
    14. Damien Besancenot & Kim Huynh & Francisco Serranito, 2015. "Co-Authorship And Individual Research Productivity In Economics: Assessing The Assortative Matching Hypothesis," Working Papers halshs-01252373, HAL.
    15. De Groote, Olivier & Pepermans, Guido & Verboven, Frank, 2016. "Heterogeneity in the adoption of photovoltaic systems in Flanders," Energy Economics, Elsevier, vol. 59(C), pages 45-57.
    16. María Isabel Ayuda & Hugo Ferrer-Pérez & Vicente Pinilla, 2018. "How to become a leader in an emerging new global market: The determinants of French wine exports, 1848-1938," Working Papers 0124, European Historical Economics Society (EHES).
    17. Georgios Papadopoulos, 2014. "Immigration status and property crime: an application of estimators for underreported outcomes," IZA Journal of Migration, Springer;Forschungsinstitut zur Zukunft der Arbeit GmbH (IZA), vol. 3(1), pages 1-30, December.
    18. Vidhura Tennekoon, 2017. "Counting unreported abortions: A binomial-thinned zero-inflated Poisson model," Demographic Research, Max Planck Institute for Demographic Research, Rostock, Germany, vol. 36(2), pages 41-72, January.
    19. Damien Besancenot & Kim Huynh & Francisco Serranito, 2015. " Thou shalt not work alone ," Working Papers hal-01175758, HAL.
    20. Maurus Rischatsch, 2009. "Simulating WTP Values from Random-Coefficient Models," SOI - Working Papers 0912, Socioeconomic Institute - University of Zurich.
    21. repec:spr:jlabrs:v:51:y:2017:i:1:d:10.1186_s12651-017-0233-5 is not listed on IDEAS
    22. 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.
    23. Damien Besancenot & Kim Huynh & Francisco Serranito, 2015. " Thou shalt not work alone ," CEPN Working Papers hal-01175758, HAL.
    24. repec:eee:jimfin:v:81:y:2018:i:c:p:138-158 is not listed on IDEAS

    More about this item

    JEL classification:

    • I12 - Health, Education, and Welfare - - Health - - - Health Behavior
    • C12 - Mathematical and Quantitative Methods - - Econometric and Statistical Methods and Methodology: General - - - Hypothesis Testing: General
    • C25 - Mathematical and Quantitative Methods - - Single Equation Models; Single Variables - - - Discrete Regression and Qualitative Choice Models; Discrete Regressors; Proportions; Probabilities

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