@TechReport{iza:izadps:dp317,
            	author={Winkelmann, Rainer},
            	title={Health Care Reform and the Number of Doctor Visits - An Econometric Analysis},
            	year={2001},
	month={Jun},
            	institution={Institute of Labor Economics (IZA)},
            	address={Bonn},
            	type={IZA Discussion Paper},
            	number={317},
            	url={https://www.iza.org/index.php/publications/dp317},
	abstract={The paper evaluates the German health care reform of 1997, using the individual number of doctor visits as outcome measure. A new econometric model, the Probit-Poisson-log-normal model with correlated errors, describes the data better than existing count data models. Moreover, it has an attractive structural interpretation, as it allows the reforms to have a different effect at different parts of the distribution. The overall effect of the reform was a 10 percent reduction in the number of doctor visits. The effect was much larger in the lower part of the distribution than in the upper part.},
	keywords={count data;moral hazard;Co-payment;probit-Poisson-log-normal model},
            }