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首页> 外文期刊>Environmental health perspectives. >Mortality effects of a copper smelter strike and reduced ambient sulfate particulate matter air pollution.
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Mortality effects of a copper smelter strike and reduced ambient sulfate particulate matter air pollution.

机译：铜冶炼厂的死亡率效应和减少的环境硫酸盐颗粒物空气污染。

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BACKGROUND: Numerous studies have reported associations between fine particulate and sulfur oxide air pollution and human mortality. Yet there continues to be concern that public policy efforts to improve air quality may not produce actual improvement in human health. OBJECTIVES: This study retrospectively explored a natural experiment associated with a copper smelter strike from 15 July 1967 through the beginning of April 1968. METHODS: In the 1960s, copper smelters accounted for approximately 90% of all sulfate emissions in the four Southwest states of New Mexico, Arizona, Utah, and Nevada. Over the 8.5-month strike period, a regional improvement in visibility accompanied an approximately 60% decrease in concentrations of suspended sulfate particles. We collected monthly mortality counts for 1960-1975 and analyzed them using Poisson regression models. RESULTS: The strike-related estimated percent decrease in mortality was 2.5% (95% confidence interval, 1.1-4.0%), based on a Poisson regression model that controlled for time trends, mortality counts in bordering states, and nationwide mortality counts for influenza/pneumonia, cardiovascular, and other respiratory deaths. CONCLUSIONS: These results contribute to the growing body of evidence that ambient sulfate particulate matter and related air pollutants are adversely associated with human health and that the reduction in this pollution can result in reduced mortality.
机译：背景：大量研究报道了细颗粒和氧化硫空气污染与人类死亡率之间的关联。然而，人们仍然担心，改善空气质量的公共政策努力可能不会真正改善人类健康。目的：本研究回顾性地探索了一个自1967年7月15日至1968年4月初与铜冶炼厂罢工有关的自然实验。方法：在1960年代，铜冶炼厂约占新西南四个州所有硫酸盐排放量的90％。墨西哥，亚利桑那州，犹他州和内华达州。在8.5个月的罢工期间，可见度的区域性提高伴随着悬浮硫酸盐颗粒浓度的降低约60％。我们收集了1960-1975年的每月死亡率数据，并使用Poisson回归模型进行了分析。结果：根据Poisson回归模型，与罢工相关的死亡率估计下降了2.5％（95％置信区间为1.1-4.0％），该模型控制了时间趋势，临近州的死亡率以及全国范围内的流感死亡率/肺炎，心血管疾病和其他呼吸道疾病死亡。结论：这些结果促使越来越多的证据表明周围的硫酸盐颗粒物和相关的空气污染物与人类健康有不利的关系，这种污染的减少可以导致死亡率的降低。

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