We review recent likelihood-based approaches to modeling demand for medical care. A semi-nonparametric model along the lines of Cameron and Johansson's Poisson polynomial model, but using a negative binomial baseline model, is introduced. We apply these models, as well a semiparametric Poisson,...

In Chile, dependant workers are mandated to purchase health insurance and they can chose between one public provider and several private providers. Here, we analyze the relation between utilization and the choice of either private or public insurance. Independent workers, however, are not...

This paper studies the effects and estimation of errors-in-variables negative binomial regression model. We prove that in the presence of measurement errors, in general, maximum likelihood estimator of the overdispersion using the observed data is biased upward. We adopt a structural approach...

This paper investigates the roots of international, domestic, and separatist terrorism using a new, extensive, multi-country panel data set obtained from MIPT (Memorial Institute of Prevention of Terrorism). I augment the MIPT data by recording the target country and the terrorist's country of...

The increase of tourist activity for many destinations and their increased mobility within host countries has implied a rise in tourism associated externalities with vehicle crashes being the most common cause of injury for tourists. Within the transport literature, the number and variations in...