English, Article, Journal or magazine article edition: Robust estimation of zero-inflated count models Kevin E. Staub; Rainer Winkelmann

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Bookmark: http://trove.nla.gov.au/version/198422
Physical Description
  • preprint
Language
  • English

Edition details

Title
  • Robust estimation of zero-inflated count models
Author
  • Kevin E. Staub
  • Rainer Winkelmann
Physical Description
  • preprint
Notes
  • Applications of zero-inflated count data models have proliferated in empirical economic research. There is a downside to this development, as zero-inflated Poisson or zero-inflated Negative Binomial Maximum Likelihood estimators are not robust to misspecification. In contrast, simple Poisson regression provides consistent parameter estimates even in the presence of excess zeros. The advantages of the Poisson approach are illustrated in a series of Monte Carlo simulations.
  • excess zeros, Poisson, overdispersion, Negative Binomial regression.
  • RePEc:soz:wpaper:0908
Language
  • English
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