Association between short-term exposure to ambient air pollution and daily mortality: a time-series study in Eastern China
2018
Li, Die | Wang, Jian-bing | Zhang, Zhen-yu | Shen, Peng | Zheng, Pei-wen | Jin, Ming-juan | Lu, Huaizhu | Lin, Hong-bo | Chen, Kun
Few studies were conducted to evaluate health effects of acute exposure to PM₂.₅ and daily mortality in Asian countries due to lack of large-scale PM₂.₅ monitoring data. We conducted a time-series study to examine the associations of short-term exposure to four common air pollutants (PM₂.₅, PM₁₀, NO₂, and SO₂) and daily mortality in Ningbo, Zhejiang, China. We used generalized addictive model (GAM) to estimate relative risks (RRs) and 95% confidence intervals (CIs) for the association of these four air pollutants with daily mortality. The study included 9365 people in the 2-year study period from 2014 to 2015. SO₂ were significantly associated with risk of NAD, RD, and CD mortality with RRs of 1.034 (95% CI 1.004, 1.064), 1.067 (95% CI 1.010, 1.127), and 1.049 (95% CI 1.001, 1.098), respectively.PM₂.₅ and PM₁₀ were significantly associated with risk of death from NAD mortality in warm season. Similar associations were observed for PM₁₀ (RR = 1.056, 95% CI 1.004, 1.111) and risk of CD mortality. The study provides further evidence that short-term exposure to PM₂.₅, PM₁₀, NO₂, and SO₂ are associated with increased risk of daily mortality.
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