- Co-payments for prescription drugs and the demand for doctor visits--evidence from a natural experimentRainer Winkelmann
Department of Economics, University of Zurich, Switzerland
Health Econ 13:1081-9. 2004..The differences-in-differences estimates indicate that increased co-payments reduced the number of doctor visits by about 10% on an average...
- Reforming health care: evidence from quantile regressions for countsRainer Winkelmann
University of Zurich, Socioeconomic Institute, Ziirichbergstr 14, CH 8032 Zurich, Switzerland
J Health Econ 25:131-45. 2006..An analysis of a 1997 health care reform in Germany shows that lower quantiles, such as the first quartile, fell by substantially larger amounts than what would have been predicted based on Poisson or negative binomial models...