1. Ambient particulate matter and chronic obstructive pulmonary disease mortality: a nationwide, individual-level, case-crossover study in China.
- Author
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Jiang S, Tong X, Yu K, Yin P, Shi S, Meng X, Chen R, Zhou M, Kan H, Niu Y, and Li Y
- Subjects
- Humans, China epidemiology, Male, Female, Aged, Middle Aged, Air Pollutants adverse effects, Air Pollutants analysis, Risk Factors, Aged, 80 and over, Seasons, Pulmonary Disease, Chronic Obstructive mortality, Pulmonary Disease, Chronic Obstructive epidemiology, Pulmonary Disease, Chronic Obstructive etiology, Particulate Matter adverse effects, Particulate Matter analysis, Cross-Over Studies, Environmental Exposure adverse effects, Air Pollution adverse effects, Air Pollution analysis
- Abstract
Background: Short-term exposure to particulate matter air pollution has been associated with the exacerbations of COPD, but its association with COPD mortality was not fully elucidated. We aimed to assess the association between short-term particulate matter exposure and the risk of COPD mortality in China using individual-level data., Methods: We derived 2.26 million COPD deaths from a national death registry database in Chinese mainland between 2013 and 2019. Exposures to fine particulate matter (PM
2.5 ) and coarse particulate matter (PM2.5-10 ) were assessed by satellite-based models of a 1 × 1 km resolution and assigned to each individual based on residential address. The associations of PM2.5 and PM2.5-10 with COPD mortality were examined using a time-stratified case-crossover design and conditional logistic regressions with distributed lag models. We further conducted stratified analyses by age, sex, education level, and season., Findings: Short-term exposures to both PM2.5 and PM2.5-10 were associated with increased risks of COPD mortality. These associations appeared and peaked on the concurrent day, attenuated and became nonsignificant after 5 or 7 days, respectively. The exposure-response curves were approximately linear without discernible thresholds. An interquartile range increase in PM2.5 and PM2.5-10 concentrations was associated with 4.23% (95% CI: 3.75%, 4.72%) and 2.67% (95% CI: 2.18%, 3.16%) higher risks of COPD mortality over lag 0-7 d, respectively. The associations of PM2.5 and PM2.5-10 attenuated slightly but were still significant in the mutual-adjustment models. A larger association of PM2.5-10 was observed in the warm season., Interpretation: This individual-level, nationwide, case-crossover study suggests that short-term exposure to PM2.5 and PM2.5-10 might act as one of the environmental risk factors for COPD mortality., Funding: This study is supported by the National Key Research and Development Program of China (2023YFC3708304 and 2022YFC3702701), the National Natural Science Foundation of China (82304090 and 82030103), the 3-year Action Plan for Strengthening the Construction of the Public Health System in Shanghai (GWVI-11.2-YQ31), and the Science and Technology Commission of Shanghai Municipality (21TQ015)., Competing Interests: Declaration of interests All authors declare no potential conflicts of interest., (Copyright © 2024 The Author(s). Published by Elsevier B.V. All rights reserved.)- Published
- 2024
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