@TechReport{iza:izadps:dp16897, author={Kim, Seonghoon and Koh, Kanghyock and Lyou, Wonjun}, title={The Effects of Patient Cost-Sharing on Adolescents' Healthcare Utilization and Financial Risk Protection: Evidence from South Korea}, year={2024}, month={Mar}, institution={Institute of Labor Economics (IZA)}, address={Bonn}, type={IZA Discussion Paper}, number={16897}, url={https://www.iza.org/index.php/publications/dp16897}, abstract={We examine the effects of patient cost-sharing on adolescents' healthcare utilization and out-of-pocket medical expenditures by exploiting the healthcare reform in South Korea that lowered the coinsurance rate for inpatient care from 20% to 5% for children under 16. We apply a difference-in-regression-discontinuities design using administrative claims data. We find that the reform increased adolescents' inpatient care utilization. It also reduced out-of-pocket healthcare expenditures. This effect was larger among low-income households, facilitating income redistribution. However, the lack of evidence on health improvements and household consumption spending responses suggests that generous patient cost-sharing for adolescent healthcare may cause efficiency losses.}, keywords={consumption spending;income redistribution;out-of-pocket expenditure;healthcare utilization;patient cost-sharing;difference in regression discontinuities design}, }