Improvement in life expectancy for ischemic heart diseases by achieving daily ambient PM2.5 standards in China
Improvement in life expectancy for ischemic heart diseases by achieving daily ambient PM2.5 standards in China
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DOI：
10.1016/j.envres.2020.110512
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发表时间：
2021-02-01
影响因子：
8.3
通讯作者：
Lin, Hualiang
中科院分区：
文献类型：
--
作者：
Qi, Jinlei;Chen, Qian;Lin, Hualiang
背景资料：每日环境细颗粒物污染（PM2.5）暴露对缺血性心脏病（IHD）导致的寿命损失年（YLL）的潜在影响仍不确定。我们的目的是通过达到中国环境PM2.5的每日空气质量标准来估计IHD相关预期寿命的改善。方法和结果：本研究基于2013年至2016年中国96个城市的每日死亡率数据。IHD相关的YLLs和每日PM2.5之间的区域和国家的关联估计广义加性模型。我们进一步评估了与IHD相关的可避免的YLL，假设每日PM2.5低于世界卫生组织（WHO）和中国的环境空气质量标准，并通过将可避免的YLL除以IHD死亡总数来计算预期寿命的改善。从2013年到2016年，我们总共记录了1，485，140例IHD死亡。在全国范围内，我们发现IHD相关的YLL与每日PM2.5之间存在正相关。四天平均环境PM2.5每增加10 μ g/m3，与0.40 IHD相关YLL增加相关（95%CI：0.28，0.51）。若达到WHO空气质量标准，则每个城市平均可避免1346.94（95%CI：932.61，1761.27）例IHD死亡。平均而言，每例死亡可使预期寿命提高0.15年（95%CI：0.11，0.19.Conclusions）：我们的研究提供了一个全国范围内的图片的预期寿命的改善，达到每日PM2.5标准在中国，表明人们可以在更高的空气质量的环境中寿命更长。
Background: The potential impacts of daily ambient fine particulate pollution (PM2.5) exposure on year of life lost (YLL) due to ischemic heart diseases (IHD) remain uncertain. We aimed to estimate the improvement in IHD-related life expectancy by attaining the daily air quality standards of ambient PM2.5 in China.Methods and results: This study was based on daily mortality data covering 96 Chinese cities from 2013 to 2016. Regionaland national-associations between IHD-related YLLs and daily PM2.5 were estimated by generalized additive models. We further evaluated the IHD-related avoidable YLLs with an assumption that the daily PM2.5 was below the ambient air quality standards of World Health Organization (WHO) and China, and calculated the improvement of life expectancy by dividing the avoidable YLLs by the overall number of IHD mortality. We totally recorded 1,485,140 IHD deaths from 2013 to 2016. At the national level, we found a positive association between IHD-related YLLs and daily PM2.5. Per 10 mu g/m(3) increment of four-day averaged ambient PM2.5 related to an increase of 0.40 IHD-related YLLs (95% CI: 0.28, 0.51). By achieving the WHO's air quality guideline, we estimated that an averaged number of 1346.94 (95% CI: 932.61, 1761.27) YLLs can be avoided for the IHD deaths in each city. On average, the life expectancy can be improved by 0.15 years (95% CI: 0.11, 0.19) for each death.Conclusions: Our study provides a nationwide picture of the life expectancy improvements by reaching the daily PM2.5 standards in China, indicating that people can live longer in an environment with higher air quality.