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Simple tests for exogeneity of a binary explanatory variable in count data regression models

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  • Kevin E. Staub

    () (Socioeconomic Institute, University of Zurich)

Abstract

This article investigates power and size of some tests for exogeneity of a binary explanatory variable in count models by conducting extensive Monte Carlo simulations. The tests under consideration are Hausman contrast tests as well as univariate Wald tests, including a new test of notably easy implementation. Performance of the tests is explored under misspecification of the underlying model and under different conditions regarding the instruments. The results indicate that often the tests that are simpler to estimate outperform tests that are more demanding. This is especially the case for the new test.

Suggested Citation

  • Kevin E. Staub, 2009. "Simple tests for exogeneity of a binary explanatory variable in count data regression models," SOI - Working Papers 0904, Socioeconomic Institute - University of Zurich.
  • Handle: RePEc:soz:wpaper:0904
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    File URL: http://www.econ.uzh.ch/static/wp_soi/wp0904.pdf
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    References listed on IDEAS

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    Citations

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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. Luintel, Kul B & Xu, Yongdeng, 2013. "Testing weak exogeneity in multiplicative error models," Cardiff Economics Working Papers E2013/6, Cardiff University, Cardiff Business School, Economics Section.
    3. repec:fgv:epgrbe:v:66:n:4:a:3 is not listed on IDEAS
    4. Michele Sennhauser, 2009. "Why the Linear Utility Function is a Risky Choice in Discrete-Choice Experiments," SOI - Working Papers 1014, Socioeconomic Institute - University of Zurich.
    5. Polk, Andreas & Schmutzler, Armin & Müller, Adrian, 2014. "Lobbying and the power of multinational firms," European Journal of Political Economy, Elsevier, vol. 36(C), pages 209-227.
    6. Maurus Rischatsch, 2009. "Simulating WTP Values from Random-Coefficient Models," SOI - Working Papers 0912, Socioeconomic Institute - University of Zurich.
    7. Richardson, Leslie A. & Champ, Patricia A. & Loomis, John B., 2012. "The hidden cost of wildfires: Economic valuation of health effects of wildfire smoke exposure in Southern California," Journal of Forest Economics, Elsevier, vol. 18(1), pages 14-35.
    8. Geraci, A. & Fabbri, D. & Monfardini, C., 2014. "Testing exogeneity of multinomial regressors in count data models: does two stage residual inclusion work?," Health, Econometrics and Data Group (HEDG) Working Papers 14/03, HEDG, c/o Department of Economics, University of York.
    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.

    More about this item

    Keywords

    Endogeneity; Poisson; dummy variable; testing;

    JEL classification:

    • 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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