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Impact of medical subsidy disqualification on children's healthcare utilization: A difference-in-differences analysis from Japan

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  • Miyawaki, Atsushi
  • Noguchi, Haruko
  • Kobayashi, Yasuki

Abstract

Financial support for children's medical expenses has been introduced in many countries. Limited work has been done on price elasticity in children's healthcare demand, especially in countries other than the United States. Moreover, it remains unclear how the effects of a change in the cost sharing rate on healthcare demand would differ by medical condition. We investigated the impact of an increase in the cost sharing rate on medical service utilization among school children as a whole and for each of nine common conditions, applying a difference-in-differences approach. The study period ranged from April 1, 2012, to March 30, 2014. Participants were elementary school children in an urban area who were eligible for National Health Insurance (a community-based public insurance) during the study period and who were enrolled in the 2nd, 3rd, or 4th grade in April 2013. We collected observations from 2896 persons and 69,504 (2896 × 24 months) person-months. When elementary school children were promoted to the 4th grade, they became disqualified for a municipal medical subsidy. The control group was the children promoted to the 2nd or the 3rd grade, who remained eligible for the subsidy. All data were obtained from health insurance claims. We identified the nine most common medical conditions among the subject children, and stratified the analyses by the condition diagnosed. We found that an increase in the cost sharing rate reduced outpatient service utilization as a whole. Also, we observed an increase in inpatient service utilization, not because of worsened health conditions, but rather due to substitution of inpatient service for outpatient service. The reductions in outpatient service were heterogeneous across medical conditions; declines were sharper for mild or chronic conditions. These findings may help to characterize how a change in cost sharing rate affects health outcomes in children.

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  • Miyawaki, Atsushi & Noguchi, Haruko & Kobayashi, Yasuki, 2017. "Impact of medical subsidy disqualification on children's healthcare utilization: A difference-in-differences analysis from Japan," Social Science & Medicine, Elsevier, vol. 191(C), pages 89-98.
    • Handle: RePEc:eee:socmed:v:191:y:2017:i:c:p:89-98
    DOI: 10.1016/j.socscimed.2017.09.001
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    1. 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 251-277, June.
    2. Janet Currie & Mark Stabile, 2003. "Socioeconomic Status and Child Health: Why Is the Relationship Stronger for Older Children?," American Economic Review, American Economic Association, vol. 93(5), pages 1813-1823, December.
    3. Janet Currie, 2009. "Healthy, Wealthy, and Wise: Socioeconomic Status, Poor Health in Childhood, and Human Capital Development," Journal of Economic Literature, American Economic Association, vol. 47(1), pages 87-122, March.
    4. Jeffrey M Wooldridge, 2010. "Econometric Analysis of Cross Section and Panel Data," MIT Press Books, The MIT Press, edition 2, volume 1, number 0262232588, December.
    5. Dolores De La Mata, 2012. "The Effect Of Medicaid Eligibility On Coverage, Utilization, And Children'S Health," Health Economics, John Wiley & Sons, Ltd., vol. 21(9), pages 1061-1079, September.
    6. Amy Finkelstein & Sarah Taubman & Bill Wright & Mira Bernstein & Jonathan Gruber & Joseph P. Newhouse & Heidi Allen & Katherine Baicker, 2012. "The Oregon Health Insurance Experiment: Evidence from the First Year," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 127(3), pages 1057-1106.
    7. Sarah Miller, 2012. "The Impact of the Massachusetts Health Care Reform on Health Care Use among Children," American Economic Review, American Economic Association, vol. 102(3), pages 502-507, May.
    8. Takaku, Reo, 2016. "Effects of reduced cost-sharing on children's health: Evidence from Japan," Social Science & Medicine, Elsevier, vol. 151(C), pages 46-55.
    9. Amitabh Chandra & Jonathan Gruber & Robin McKnight, 2010. "Patient Cost-Sharing and Hospitalization Offsets in the Elderly," American Economic Review, American Economic Association, vol. 100(1), pages 193-213, March.
    10. David Card & Carlos Dobkin & Nicole Maestas, 2008. "The Impact of Nearly Universal Insurance Coverage on Health Care Utilization: Evidence from Medicare," American Economic Review, American Economic Association, vol. 98(5), pages 2242-2258, December.
    11. Cameron, A Colin & Trivedi, Pravin K, 1986. "Econometric Models Based on Count Data: Comparisons and Applications of Some Estimators and Tests," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 1(1), pages 29-53, January.
    12. Case, Anne & Fertig, Angela & Paxson, Christina, 2005. "The lasting impact of childhood health and circumstance," Journal of Health Economics, Elsevier, vol. 24(2), pages 365-389, March.
    13. Marianne Bertrand & Esther Duflo & Sendhil Mullainathan, 2004. "How Much Should We Trust Differences-In-Differences Estimates?," The Quarterly Journal of Economics, President and Fellows of Harvard College, vol. 119(1), pages 249-275.
    14. Palmer, Michael & Mitra, Sophie & Mont, Daniel & Groce, Nora, 2015. "The impact of health insurance for children under age 6 in Vietnam: A regression discontinuity approach," Social Science & Medicine, Elsevier, vol. 145(C), pages 217-226.
    15. Simon Condliffe & Charles R. Link, 2008. "The Relationship between Economic Status and Child Health: Evidence from the United States," American Economic Review, American Economic Association, vol. 98(4), pages 1605-1618, September.
    16. Buntin, Melinda Beeuwkes & Zaslavsky, Alan M., 2004. "Too much ado about two-part models and transformation?: Comparing methods of modeling Medicare expenditures," Journal of Health Economics, Elsevier, vol. 23(3), pages 525-542, May.
    17. Winnie Yip & Peter Berman, 2001. "Targeted health insurance in a low income country and its impact on access and equity in access: Egypt's school health insurance," Health Economics, John Wiley & Sons, Ltd., vol. 10(3), pages 207-220, April.
    18. Stella A. Quimbo & John W. Peabody & Riti Shimkhada & Jhiedon Florentino & Orville Solon, 2011. "Evidence of a causal link between health outcomes, insurance coverage, and a policy to expand access: experimental data from children in the Philippines," Health Economics, John Wiley & Sons, Ltd., vol. 20(5), pages 620-630, May.
    19. Currie, Janet & Decker, Sandra & Lin, Wanchuan, 2008. "Has public health insurance for older children reduced disparities in access to care and health outcomes?," Journal of Health Economics, Elsevier, vol. 27(6), pages 1567-1581, December.
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