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首页> 美国卫生研究院文献>International Journal of Environmental Research and Public Health >Acute and Cumulative Effects of Haze Fine Particles on Mortality and the Seasonal Characteristics in Beijing China 2005–2013: A Time-Stratified Case-Crossover Study
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Acute and Cumulative Effects of Haze Fine Particles on Mortality and the Seasonal Characteristics in Beijing China 2005–2013: A Time-Stratified Case-Crossover Study

机译：2005-2013年北京雾霾细颗粒对死亡率和季节特征的急性累积影响：基于时间分层的病例交叉研究

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摘要

We observed significant effects of particulate matter (PM2.5) on cause-specific mortality by applying a time-stratified case-crossover and lag-structure designs in Beijing over a nine-year study period (2005–2013). The year-round odds ratio (OR) was 1.005 on the current day with a 10 μg/m3 increase in PM2.5 for all-cause mortality. For cardiovascular mortality and stroke, the ORs were 1.007 and 1.008 on the current day, respectively. Meanwhile, during a lag of six days, the cumulative effects of haze on relative risk of mortality, respiratory mortality and all-cause mortality was in the range of 2~11%. Moreover, we found a significant seasonal pattern in the associations for respiratory mortality: significant associations were observed in spring and fall, while for all-cause mortality, cardiovascular mortality, cardiac and stroke, significant associations were observed in winter. Moreover, increasing temperature would decrease risks of mortalities in winter taking fall as the reference season. We concluded that in summer, temperature acted as a direct enhancer of air pollutants; while in winter and spring, it was an index of the diameter distribution and composition of fine particles.
机译：我们通过对北京进行了为期9年（2005-2013年）的时间分层病例交叉和滞后结构设计，观察到颗粒物（PM2.5）对特定原因死亡率的显着影响。当天的全年比值比（OR）为1.005，全因死亡率导致PM2.5升高10μg/ m 3 。对于心血管疾病的死亡率和中风，当天的OR分别为1.007和1.008。同时，在六天的滞后时间内，雾霾对死亡率，呼吸道死亡率和全因死亡率的相对风险的累积影响在2％至11％的范围内。此外，我们在呼吸系统死亡率的关联中发现了显着的季节性模式：在春季和秋季观察到显着的关联，而在全因死亡率，心血管疾病死亡率，心脏和中风方面，在冬季观察到显着的关联。此外，升高温度将降低以秋天为基准季节的冬季死亡的风险。我们得出的结论是，在夏季，温度是空气污染物的直接增强剂。而在冬季和春季，它是细颗粒直径分布和组成的指标。

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