Can the Health Insurance Reforms stop an increase in medical costs of middle- and old-aged persons in Japan?
Using two-period panel data from the Nippon Life Insurance Research Institute, this paper tests the hypothesis that an increase in the self-pay ratio of medical expenditures associated with the Japanese health insurance reforms of April 2003 reduced individual medical costs. We find that the increase in the self-pay ratio of medical expenditures has a trivial effect on household medical expenses, implying that a decrease in the quantity demanded for medical services offsets the increase in medical costs. However, according to quantile regression estimates, an increase in the self-pay ratio of medical expenditures has a significantly positive effect on the share of medical costs for relatively high quantile values. This provides corroborating evidence that an increase in the self-pay ratio cannot cut the demand for medical services relatively more for those bearing a higher share of medical costs in household expenditure. An additional finding is that medical services are a necessity good, particularly for those with a relatively high share of medical costs in household expenditure.
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|Date of creation:||Apr 2010|
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|Contact details of provider:|| Web page: http://www2.econ.osaka-u.ac.jp/library/global/e_HP/e_g_shiryo.html|
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- Jayanta Bhattacharya & William B. Vogt & Aki Yoshikawa & Toshitaka Nakahara, 1996. "The Utilization of Outpatient Medical Services in Japan," Journal of Human Resources, University of Wisconsin Press, vol. 31(2), pages 450-476.
- Atsushi Yoshida & Shingo Takagi, 2002. "Effects of the Reform of the Social Medical Insurance System in Japan," The Japanese Economic Review, Japanese Economic Association, vol. 53(4), pages 444-465.
- Yoshida, Atsushi & Kawamura, Akira, 2009. "Who has benefited from the health services system for the elderly in Japan?," Japan and the World Economy, Elsevier, vol. 21(3), pages 256-269, August.
- Mari Kan & Wataru Suzuki, 2006. "The demand for medical care in Japan: initial findings from a Japanese natural experiment," Applied Economics Letters, Taylor & Francis Journals, vol. 13(5), pages 273-277.
- 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.
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