Identification issues in models for underreported counts

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Identification issues in models for underreported counts

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Georgios Papadopoulos
J. M. C. Santos Silva ()

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João M.C. Santos Silva

Abstract

In this note we study the conditions under which leading models for underreported counts are identified. In particular, we highlight a peculiar identification problem that afflicts two of the most popular models in this class.

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Paper provided by University of Essex, Department of Economics in its series Economics Discussion Papers with number 657.

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Date of creation: 29 Jul 2008
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Handle: RePEc:esx:essedp:657

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This paper has been announced in the following NEP Reports:

NEP-ALL-2008-08-06 (All new papers)
NEP-ECM-2008-08-06 (Econometrics)

References listed on IDEAS
Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.:

Deb, Partha & Trivedi, Pravin K., 2002. "The structure of demand for health care: latent class versus two-part models," Journal of Health Economics, Elsevier, vol. 21(4), pages 601-625, July. [Downloadable!] (restricted)
R. Winkelmann, 1998. "Count data models with selectivity," Econometric Reviews, Taylor and Francis Journals, vol. 17(4), pages 339-359. [Downloadable!] (restricted)
Other versions:
- Rainer Winkelmann, . "Count Data Models with Selectivity," Working Papers 9603, University of Canterbury, Department of Economics. [Downloadable!]
Mullahy, John, 1986. "Specification and testing of some modified count data models," Journal of Econometrics, Elsevier, vol. 33(3), pages 341-365, December. [Downloadable!] (restricted)
Deb, Partha & Trivedi, Pravin K, 1997. "Demand for Medical Care by the Elderly: A Finite Mixture Approach," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 12(3), pages 313-36, May-June. [Downloadable!]

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Cited by:
(explanations, Please report citation or reference errors to , or , if you are the registered author of the cited work, log in to your RePEc Author Service profile, click on "citations" and make appropriate adjustments.)

Kevin E. Staub & Rainer Winkelmann, 2009. "Robust estimation of zero-inflated count models," Working Papers 0908, University of Zurich, Socioeconomic Institute. [Downloadable!]

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