编号：E-2023-7-3
题目：The Effect of Long-term Exposure to Air Pollution on Multimorbidity, Functional Disability and Quality of Life
作者：Ye Yuan, Runhao Zhao, Chong Liu, Junjian Yi
联系方式：Junjian Yi, junjian@nsd.pku.edu.cn.
摘要：This study investigates the impact of long-term exposure to fine particulate matters (PM2.5) on multimorbidity, functional disability, and quality of life in China. We find that a 10 µg/m3 increase in PM2.5 level increases multimorbidity by 5.2 percentage points (95% CI: 1.9-8.5), functional disability by 3.6 percentage points (0.3-6.9), and reduces quality of life by 21.4 years (4.4- 38.4) per one thousand population per year. These adverse effects are more pronounced among populations with lower income and education levels. Our analysis leverages quasi-experimental variation in PM2.5 generated by China’s winter heating policy, which provides coal-fueled heating to cities north of the Qinling-Huaihe line but not to those to the south. Our findings are derived from a regression discontinuity design based on distance from the Qinling-Huaihe line and are robust to various estimation specifications and adjustments for covariates. Our results highlight the significant health risks of prolonged air pollution exposure on multimorbidity and population quality of life. Our estimates suggest that China’s Clean Air Plan’s reduction in national PM2.5 levels from 2013-2020 would save 11.3 million life-years per year.
关键词：Particulate matters, multimorbidity, functional disability, quality of life
