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March 22, 2026JAMA Health Forum3 citationsOpen Access

Income-Based Inequalities in Health System Performance in the US and South Korea

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SPSungchul ParkKEKaren EgglestonYDYoung Kyung Do

Key Points

  • To assess the association between income and health system performance in the US and South Korea.
  • Cross-sectional study comparing health system performance by income levels.
  • Analysis conducted in both the US and South Korea.
  • Income is linked to disparities in health system performance.
  • Larger differences by income were observed in the US compared to South Korea.
  • Structural and systemic policy efforts are suggested to address these health inequalities.

Abstract

In this cross-sectional study, income was associated with disparities in health system performance in both the US and South Korea, with larger differences by income in the US. The findings suggest that structural and systemic policy efforts are needed to address income-based health inequalities, particularly in the US.

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Cite This Study

Park et al. (2026) studied this question.

synapsesocial.com/papers/69bf3924c7b3c90b18b437a5https://doi.org/10.1001/jamahealthforum.2026.0136
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