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Regression models for count data based on the negative binomial(p) distribution

Author

Listed:
  • James W. Hardin

    (University of South Carolina)

  • Joseph M. Hilbe

    (Arizona State University)

Abstract

TWe present new Stata commands for estimating several regression models suitable for analyzing overdispersed count outcomes. The nbregp command nests the dispersion(constant) and dispersion(mean) versions of Stata’s nbreg command in a model for negative binomial(p) regression. The zignbreg command extends Stata’s gnbreg command for zero inflation, and the zinbregp command fits a negative binomial(p) regression model with zero inflation. The new commands for zero-inflated models allow specification of links within the glm command’s collection for the Bernoulli model of zero inflation. These commands will optionally calculate a Vuong test, which compares the zero-inflated model with the nonzeroinflated model.

Suggested Citation

  • James W. Hardin & Joseph M. Hilbe, 2014. "Regression models for count data based on the negative binomial(p) distribution," Stata Journal, StataCorp LP, vol. 14(2), pages 280-291, June.
    • Handle: RePEc:tsj:stataj:v:14:y:2014:i:2:p:280-291
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    Cited by:

    1. Christian Balcells, 2022. "Determinants of firm boundaries and organizational performance: an empirical investigation of the Chilean truck market," Journal of Evolutionary Economics, Springer, vol. 32(2), pages 423-461, April.
    2. Jeffrey A. Chandler & Tsutomu Doiguchi & Oleg V. Petrenko, 2022. "Revisiting the Effect of Internationalization on Firm Governance: A Replication and Extension Study," Management International Review, Springer, vol. 62(3), pages 351-391, June.
    3. Azis Iwan J. & Pratama Alvin, 2020. "Polarization and Local Conflicts in Post Decentralization Indonesia," Peace Economics, Peace Science, and Public Policy, De Gruyter, vol. 26(2), pages 1-28, May.
    4. Abre-Rehmat Qurat-ul-Ann & Sana Mahfooz, 2022. "Effect of Household Cooking Energy Poverty on Child Respiratory Health in Pakistan," iRASD Journal of Economics, International Research Alliance for Sustainable Development (iRASD), vol. 4(2), pages 352-366, June.
    5. Bismark Amfo & Robert Aidoo & James Osei Mensah, 2021. "Food coping strategies among migrant labourers on cocoa farms in southern Ghana," Food Security: The Science, Sociology and Economics of Food Production and Access to Food, Springer;The International Society for Plant Pathology, vol. 13(4), pages 875-894, August.

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