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Ambient air pollution and cerebrovascular disease mortality: an ecological time-series study based on 7-year death records in central China

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Abstract

Most studies of short-term exposure to ambient air pollution and cerebrovascular diseases focused on specific stroke-related outcomes, and results were inconsistent due to data unavailability and limited sample size. It is unclear yet how ambient air pollution contributes to the total cardiovascular mortality in central China. Daily deaths from cerebrovascular diseases were obtained from the Disease Surveillance Point System (DSPs) of Wuhan Center for Disease Control and Prevention during the period from 2013 to 2019. Air pollution data were obtained from Wuhan Ecology and Environment Institute from 10 national air quality monitoring stations, including average daily PM2.5, PM10, SO2, NO2, and O3. Average daily temperature and relative humidity were obtained from Wuhan Meteorological Bureau. We performed a Poisson regression in generalized additive models (GAM) to examine the association between ambient air pollution and cerebrovascular disease mortality. We observed a total of 84,811 deaths from cerebrovascular diseases from 1 January 2013 to 31 December 2019 in Wuhan. Short-term exposure to PM2.5, PM10, SO2, and NO2 was positively associated with daily deaths from cerebrovascular diseases, and no significant association was found for O3. The largest effect on cerebrovascular disease mortality was found at lag0 for PM2.5 (ERR: 0.927, 95% CI: 0.749–1.105 per 10 μg/m3) and lag1 for PM10 (ERR: 0.627, 95% CI: 0.493–0.761 per 10 μg/m3), SO2 (ERR: 2.518, 95% CI: 1.914, 3.122 per 10 μg/m3), and NO2 (ERR: 1.090, 95% CI: 0.822–1.358 per 10 μg/m3). The trends across lags were statistically significant. The stratified analysis demonstrated that females were more susceptible to SO2 and NO2, while elder individuals aged above 65 years old, compared with younger people, suffered more from air pollution, especially from SO2. Short-term exposure to PM2.5, PM10, SO2, and NO2 were significantly associated with a higher risk of cerebrovascular disease mortality, and elder females seemed to suffer more from air pollution. Further research is required to reveal the underlying mechanisms.

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Availability of data and materials

The data on air pollution and meteorological factors can be obtained from the National Air Pollution Monitoring System (http://www.cnemc.cn) and the China Meteorological Data Sharing Service System (https://data.cma.cn). The data on cerebrovascular disease mortality are available from the corresponding author upon reasonable request.

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Funding

This research was funded by Basic Applied Research Project of Wuhan Science and Technology Bureau, grant number 2015061701011631.

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Authors and Affiliations

Authors

Contributions

Conceptualization: Yaqiong Yan, Jie Gong, and Hao Xiang

Data curation: Niannian Yang;

Funding acquisition: Yaqiong Yan, and Hao Xiang;

Methodology: Yan Guo;

Software: Xi Chen;

Supervision: Hao Xiang, and Jie Gong;

Validation: Juan Dai

Writing—original draft: Chuangxin Wu;

Writing—review and editing: Yuanyuan Zhao.

All authors read and approved the final manuscript.

Corresponding authors

Correspondence to Jie Gong or Hao Xiang.

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Competing interests

The authors declare that they have no conflict of interest.

Ethics approval and consent to participate

The study was approved by the ethics committee of the Wuhan Centers for Disease Control and Prevention. Since the data was analyzed at an aggregate level with no individual information involved, informed consent from the participants was waived for this study.

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Not applicable

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Responsible editor: Lotfi Aleya

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Yan, Y., Chen, X., Guo, Y. et al. Ambient air pollution and cerebrovascular disease mortality: an ecological time-series study based on 7-year death records in central China. Environ Sci Pollut Res 28, 27299–27307 (2021). https://doi.org/10.1007/s11356-021-12474-z

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  • DOI: https://doi.org/10.1007/s11356-021-12474-z

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