Assessment of PM2.5-related health effects: A comparative study using multiple methods and multi-source data in China
2022
Hou, Xiaoyun | Guo, Qinghai | Hong, Yan | Yang, Qiaowei | Wang, Xinkui | Zhou, Siyang | Liu, Haiqiang
In China, PM₂.₅ pollution has caused extensive death and economic loss. Thus, an accurate assessment of the spatial distribution of these losses is crucial for delineating priority areas for air pollution control in China. In this study, we assessed the PM₂.₅ exposure-related health effects according to the integrated exposure risk function and non-linear power law (NLP) function in 338 prefecture-level cities in China by utilizing online monitoring data and the PM₂.₅ Hindcast Database (PHD). Our results revealed no significant difference between the monitoring data and PHD (p value = 0.66 > 0.05). The number of deaths caused by PM₂.₅-related Stroke (cerebrovascular disease), ischemic heart disease, chronic obstructive pulmonary disease, and lung cancer at the national level estimated through the NLP function was 0.27 million (95% CI: 0.06–0.50), 0.23 million (95% CI: 0.08–0.38), 0.31 million (95% CI: 0.04–0.57), and 0.31 million (95% CI: 0.16–0.40), respectively. The total economic cost at the national level in 2016 was approximately US$80.25 billion (95% CI: 24.46–132.25). Based on a comparison of Z statistics, we propose that the evaluation results obtained using the NLP function and monitoring data are accurate. Additionally, according to scenario simulations, Beijing, Chongqing, Tianjin, and other cities should be priority areas for PM₂.₅ pollution control to achieve considerable health benefits. Our statistics can help improve the accuracy of PM₂.₅-related health effect assessments in China.
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