Effects of cost sharing on physician utilization under favourable conditions for supplier-induced demand
The effects of cost sharing on the demand for ambulatory care in experimental circumstances are well understood since the Rand Health Insurance Experiment (HIE). However, in a non-experimental real-world context, supplier-induced demand of doctors might erode some of the significant negative out-of-pocket price elasticity identified in the HIE. Belgium is an interesting test case for this hypothesis because it has relatively high rates of patient cost sharing in its public health insurance system and a very high density of physicians, all remunerated fee-for-service. We have exploited the price variation generated by a substantial increase in patient co-payment rates in 1994 to estimate out-of-pocket price elasticities for three groups of users, and for three types of services using a fixed-effects model in levels and in differences. We obtain significant out-of-pocket price elasticities for the general population in the range from −0.39 to −0.28 for GP home visits, −0.16 to −0.12 for GP office visits and −0.10 for specialist visits. The estimates were generally lower and less significant for the groups of elderly and disabled. The differences we find in price responsiveness appear to be fairly robust and consistent with the HIE predictions. These results suggest that-at least in the short run-non-experimental utilization effects of cost sharing are very similar to the experimental evidence, even in a situation of favourable conditions for supplier-induced demand. Copyright © 2001 John Wiley & Sons, Ltd.
Volume (Year): 10 (2001)
Issue (Month): 5 ()
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- Arellano, M, 1987. "Computing Robust Standard Errors for Within-Groups Estimators," Oxford Bulletin of Economics and Statistics, Department of Economics, University of Oxford, vol. 49(4), pages 431-34, November.
- Manning, Willard G, et al, 1987. "Health Insurance and the Demand for Medical Care: Evidence from a Randomized Experiment," American Economic Review, American Economic Association, vol. 77(3), pages 251-77, June.
- David M. Cutler & Richard J. Zeckhauser, 1999.
"The Anatomy of Health Insurance,"
NBER Working Papers
7176, National Bureau of Economic Research, Inc.
- Chiappori, Pierre-Andre & Durand, Franck & Geoffard, Pierre-Yves, 1998.
"Moral hazard and the demand for physician services: First lessons from a French natural experiment,"
European Economic Review,
Elsevier, vol. 42(3-5), pages 499-511, May.
- Chiappori, P.A. & Durand, F. & Geoffard, P.Y., 1998. "Moral Hazard and the Demand for Physician Services: First Lessons from a French Natural Experiment," DELTA Working Papers 98-05, DELTA (Ecole normale supérieure).
- Zweifel, Peter & Manning, Willard G., 2000. "Moral hazard and consumer incentives in health care," Handbook of Health Economics, in: A. J. Culyer & J. P. Newhouse (ed.), Handbook of Health Economics, edition 1, volume 1, chapter 8, pages 409-459 Elsevier.
- White, Halbert, 1980. "A Heteroskedasticity-Consistent Covariance Matrix Estimator and a Direct Test for Heteroskedasticity," Econometrica, Econometric Society, vol. 48(4), pages 817-38, May.
- A. Bhargava & L. Franzini & W. Narendranathan, 1982. "Serial Correlation and the Fixed Effects Model," Review of Economic Studies, Oxford University Press, vol. 49(4), pages 533-549.
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