School of Public Health, Department of Epidemiology and Biostatistics, Anhui Medical University, Hefei, China; Anhui Province Key Laboratory of Major Autoimmune Disease, Hefei, China.
Department of Urban Planning and Design, The University of Hong Kong, Hong Kong, China.
Chemosphere. 2021 Jun;272:129926. doi: 10.1016/j.chemosphere.2021.129926. Epub 2021 Feb 11.
Increasing studies reported increased mortality risk associated with exposure to lower-than-standard air pollution. This study aimed to investigate mortality burden and life expectancy loss due to lower-than-standard particulate matter air pollution in Hong Kong, China.
We obtained 17-year (2000-2016) daily time-series data on mortality, particulate matters with aerodynamic diameters <2.5 μm (PM) and <10 μm (PM). We applied a distributed lag non-linear model to fit the association of years of life lost (YLL) with PM and PM. Total YLL attributable to PM and PM concentrations below ambient air quality standards were estimated.
We estimated 5.2% of total YLL due to PM, of which, 33.5%, 52.8% and 94.5% occurred in concentrations not exceeding the criterion of WHO, the USA, and China, corresponding to 0.3, 0.4 and 0.7 years loss in life expectancy, respectively. There was 6.9% (annual 34434.4 YLL) of total YLL due to PM, of which, 50.7%, 50.7%, 99.5% and 99.5% occurred in concentrations below the criterion of WHO, Europe, the USA, and China, which corresponded to 0.5, 0.5, 1 and 1 year loss in life expectancy, respectively. Assuming that PM and PM concentrations had met stricter standards, more gains in life expectancy could be expected in women than in men, in people aged up to 64 years than those of 65 years or older, and in those with respiratory disease than those with cardiovascular disease.
Exposure to lower-than-standard particulate matters air pollution could shorten life expectancy and incur massive mortality burden in Hong Kong.
越来越多的研究报告称，接触低于标准的空气污染会增加死亡风险。本研究旨在调查中国香港因低于标准的细颗粒物空气污染导致的死亡负担和预期寿命损失。
我们获得了 17 年（2000-2016 年）的死亡率、空气动力学直径小于 2.5μm（PM）和小于 10μm（PM）的颗粒物的逐日时间序列数据。我们应用分布式滞后非线性模型来拟合 PM 和 PM 与年损失寿命（YLL）的关联。估计了因 PM 和 PM 浓度低于环境空气质量标准而导致的总 YLL。
我们估计有 5.2%的总 YLL 归因于 PM，其中 33.5%、52.8%和 94.5%发生在浓度未超过世界卫生组织、美国和中国标准的情况下，分别对应 0.3、0.4 和 0.7 年的预期寿命损失。有 6.9%（每年 34434.4 人年）的总 YLL 归因于 PM，其中 50.7%、50.7%、99.5%和 99.5%发生在浓度低于世界卫生组织、欧洲、美国和中国标准的情况下，分别对应 0.5、0.5、1 和 1 年的预期寿命损失。假设 PM 和 PM 浓度达到更严格的标准，女性比男性、64 岁以下的人比 65 岁或以上的人、有呼吸系统疾病的人比有心血管疾病的人可能会获得更长的预期寿命。
接触低于标准的颗粒物空气污染会缩短香港人的预期寿命，并造成大量的死亡负担。
