Long-Term Exposure to Low-Level Ambient Air Pollution and Mortality among 0.3 Million Chinese Older Adults.

Likun LIU; Xueli YUAN; Wenqing NI; Jing WEI; Tingting LIU; Ruijun XU; Yingxin LI; Zihua ZHONG; Yi ZHENG; Sihan LIANG; Rui WANG; Jian XU; Yuewei LIU

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Long-Term Exposure to Low-Level Ambient Air Pollution and Mortality among 0.3 Million Chinese Older Adults.

Author: Likun LIU ¹ ; Xueli YUAN ² ; Wenqing NI ² ; Jing WEI ³ ; Tingting LIU ⁴ ; Ruijun XU ¹ ; Yingxin LI ¹ ; Zihua ZHONG ¹ ; Yi ZHENG ¹ ; Sihan LIANG ¹ ; Rui WANG ⁵ ; Jian XU ² ; Yuewei LIU ¹
Author Information

1. Department of Epidemiology, School of Public Health, Sun Yat-sen University, Guangzhou 510080, Guangdong, China.
2. Department of Elderly Health Management, Shenzhen Center for Chronic Disease Control, Shenzhen 518020, Guangdong, China.
3. Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD 20740, USA.
4. Shenzhen Maternity & Child Healthcare Hospital, Shenzhen 518017, Guangdong, China.
5. LuoHu District Chronic Disease Hospital, Shenzhen 518024, Guangdong, China.
Publication Type:Journal Article
Keywords: Ambient air pollution; Low-level concentrations; Mortality; Older adults; Population-based study
MeSH: Humans; Aged; China/epidemiology*; Male; Female; Air Pollution/adverse effects*; Environmental Exposure/adverse effects*; Air Pollutants/analysis*; Aged, 80 and over; Particulate Matter/adverse effects*; Cardiovascular Diseases/mortality*; Mortality; Neoplasms/mortality*; East Asian People
From: Biomedical and Environmental Sciences 2024;37(12):1362-1372
CountryChina
Language:English
Abstract: OBJECTIVE:Evidence that long-term exposure to ambient air pollution increases mortality among older adults, particularly those residing in low-level air pollution locations, remains scarce. This study investigated the potential links between long-term low-level air pollution exposure and mortality among Chinese older adults.
METHODS:A population-based study with 317,464 individuals aged ≥ 65 years was conducted in Shenzhen, China during 2018 and 2020. Logistic regression models were used to analyze the associations between long-term exposure to air pollution and all-cause mortality, as the primary outcome, as well as non-accidental, cancer and cardiovascular mortality.
RESULTS:Significant associations of PM ₁, PM _2.5, PM ₁₀, SO ₂, CO, and O ₃ exposures with a higher risk of all-cause mortality were found. Adjusted odds ratio ( OR) for each 1 µg/m ³ increment was 1.49 [95% confidence interval ( CI): 1.46, 1.53] for PM ₁, 1.30 (1.27, 1.32) for PM _2.5, 1.05 (1.04, 1.06) for PM ₁₀, 5.84 (5.39, 6.32) for SO ₂, 1.04 (1.04, 1.05) for CO, and 1.02 (1.00, 1.03) for O ₃, respectively. Long-term PM ₁, PM _2.5, PM ₁₀, SO ₂, and CO exposures also elevated the risks of non-accidental, cancer and cardiovascular mortality.
CONCLUSION:Long-term low-level air pollution exposure was associated with an increased mortality risk among Chinese older adults.