Trends in income-related concentration and inequality in health in Japan: evidence from population-based National surveys from 2001 to 2022.

ABSTRACT:

Background

Japan has experienced widening income disparity in recent years, raising concerns about income inequality in health. This study aims to investigate trends in income-related concentration and inequality in key health outcomes between 2001 and 2022.

Methods

This study utilized repeated cross-sectional data from 500,580 individuals (238,746 men and 261,834 women) aged ≥ 6 years, obtained from eight waves of population-based national surveys conducted between 2001 and 2022. The study examined trends in the concentration index and the relative and slope indices of inequality for key health outcomes, including self-rated health, subjective symptoms, limitations in undertaking activities of daily living, and experience of stress/anxiety, as well as the number of physicia

SUBMITTER: Oshio T 

PROVIDER: S-EPMC12829236 | biostudies-literature | 2025 Dec

REPOSITORIES: biostudies-literature