GMM for panel count data models
Frank Windmeijer ()
No CWP21/06, CeMMAP working papers from Centre for Microdata Methods and Practice, Institute for Fiscal Studies
This paper gives an account of the recent literature on estimating models for panel count data. Specifically, the treatment of unobserved individual heterogeneity that is correlated with the explanatory variables and the presence of explanatory variables that are not strictly exogenous are central. Moment conditions are discussed for these type of problems that enable estimation of the parameters by GMM. As standard Wald tests based on efficient two-step GMM estimation results are known to have poor finite sample behaviour, alternative test procedures that have recently been proposed in the literature are evaluated by means of a Monte Carlo study.
Keywords: GMM; exponential models; hypothesis testing (search for similar items in EconPapers)
JEL-codes: C12 C13 C23 (search for similar items in EconPapers)
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Working Paper: GMM for panel count data models (2006)
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