Effect of air pollution control on life expectancy in the United States: an analysis of 545 U.S. counties for the period from 2000 to 2007.
Effect of air pollution control on life expectancy in the United States: an analysis of 545 U.S. counties for the period from 2000 to 2007.
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DOI：
10.1097/ede.0b013e3182770237
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发表时间：
2013-01
期刊：
影响因子：
--
通讯作者：
Dominici F
中科院分区：
文献类型：
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作者：
Correia AW;Pope CA 3rd;Dockery DW;Wang Y;Ezzati M;Dominici F
近年来（2000年至2007年），由于采取了干预措施，细颗粒物（PM2.5）的环境水平持续下降，但下降速度低于前几年（1980年至2000年）。PM2.5水平的这些较近期和较慢的下降是否会继续改善预期寿命，以及它们是否会平等地惠及所有人群，目前尚不清楚。我们收集了美国545个县的数据集，包括2000年和2007年特定县的年平均PM2.5，特定县的年预期寿命，以及几个衡量社会经济状况，吸烟率和人口特征的潜在混淆变量。我们使用回归模型来估计2000年至2007年期间PM2.5减少与预期寿命变化之间的关联。PM2.5浓度降低10 µg/m3与平均预期寿命增加0.35年（SD= 0.16年，p = 0.033）相关。这种关联在城市和人口密集的县更强。2000年至2007年期间，PM2.5的减少与预期寿命的提高有关。过去十年的空气污染控制继续对公众健康产生积极影响。
In recent years (2000 to 2007), ambient levels of fine particulate matter (PM2.5) have continued to decline as a result of interventions, but the decline has been at a slower rate than previous years (1980 to 2000). Whether these more recent and slower declines of PM2.5 levels continue to improve life expectancy and whether they benefit all populations equally is unknown. We assembled a dataset for 545 U.S. counties consisting of yearly county-specific average PM2.5, yearly county-specific life expectancy, and several potentially confounding variables measuring socioeconomic status, smoking prevalence and demographic characteristics for the years 2000 and 2007. We used regression models to estimate the association between reductions in PM2.5 and changes in life expectancy for the period 2000 to 2007. A decrease of 10 µg/m3 in the concentration of PM2.5 was associated with an increase in mean life expectancy of 0.35 years SD= 0.16 years, p = 0.033). This association was stronger in more urban and densely populated counties. Reductions in PM2.5 were associated with improvements in life expectancy for the period 2000 to 2007. Air pollution control in the last decade has continued to have a positive impact on public health.