Semi-Parametric Estimation of Hurdle Regression Models with an Application to Medicaid Utilization
AbstractThis paper develops a semi-parametric estimation method for hurdle (two-part) count regression models. The approach in each stage is based on Laguerre series expansion for the unknown density of the unobserved heterogeneity. The semi-parametric hurdle model nests Poisson and negative binomial hurdle models, which have been used in recent applied literature. The empirical part of the paper evaluates the impact of managed care programmes for Medicaid eligibles on utilization of health-care services using a key utilization variable, the number of doctor and health centre visits. Health status measures and age seem to be more important in determining health-care utilization than other socio-economic and enrollment variables. The semi-parametric approach is particularly useful for the analysis of overdisposed individual level data characterized by a large proportion of non-users, and highly skewed distribution of counts for users.
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Bibliographic InfoArticle provided by John Wiley & Sons, Ltd. in its journal Journal of Applied Econometrics.
Volume (Year): 12 (1997)
Issue (Month): 3 (May-June)
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Web page: http://www.interscience.wiley.com/jpages/0883-7252/
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