Climatic modification effects on the association between PM1 and lung cancer incidence in China

BMC Public Health

Xin Li¹  Jing Wei²  Weifeng Li³  Siying Wang³  Jiansheng Wu⁴  Huagui Guo⁵ 

[1] Department of Architecture and Civil Engineering, City University of Hong Kong, Hongkong, China;Department of Atmospheric and Oceanic Science, Earth System Science Interdisciplinary Center, University of Maryland, College Park, MD, USA;Department of Urban Planning and Design, The University of Hong Kong, Hongkong, China;Shenzhen Institute of Research and Innovation, The University of Hong Kong, 518057, Shenzhen, People’s Republic of China;Key Laboratory for Urban Habitat Environmental Science and Technology, Shenzhen Graduate School, Peking University, 518055, Shenzhen, People’s Republic of China;Key Laboratory for Earth Surface Processes, Ministry of Education, College of Urban and Environmental Sciences, Peking University, 100871, Beijing, People’s Republic of China;School of Architecture and Urban-rural Planning, Fuzhou University, 350108, Fuzhou, China;

关键词: Modification effects;    Climatic factors;    PM1 pollution;    Lung cancer incidence;   

DOI  :  10.1186/s12889-021-10912-8

来源: Springer

【 摘 要 】

BackgroundNationwide studies that examine climatic modification effects on the association between air pollution and health outcome are limited in developing countries. Moreover, few studies focus on PM1 pollution despite its greater health effect.ObjectivesThis study aims to determine the modification effects of climatic factors on the associations between PM1 and the incidence rates of lung cancer for males and females in China.MethodsWe conducted a nationwide analysis in 345 Chinese counties (districts) from 2014 to 2015. Mean air temperature and relative humidity over the study period were used as the proxies of climatic conditions. In terms of the multivariable linear regression model, we examined climatic modification effects in the stratified and combined datasets according to the three-category and binary divisions of climatic factors. Moreover, we performed three sensitivity analyses to test the robustness of climatic modification effects.ResultsWe found a stronger association between PM1 and the incidence rate of male lung cancer in counties with high levels of air temperature or relative humidity. If there is a 10 μg/m3 shift in PM1, then the change in male incidence rate relative to its mean was higher by 4.39% (95% CI: 2.19, 6.58%) and 8.37% (95% CI: 5.18, 11.56%) in the middle and high temperature groups than in the low temperature group, respectively. The findings of climatic modification effects were robust in the three sensitivity analyses. No significant modification effect was discovered for female incidence rate.ConclusionsMale residents in high temperature or humidity counties suffer from a larger effect of PM1 on the incidence rate of lung cancer in China. Future research on air pollution-related health impact assessment should consider the differential air pollution effects across different climatic conditions.

【 授权许可】

CC BY