Global S&T Development Trend Analysis Platform of Resources and Environment
DOI | 10.1289/EHP232 |
Estimating Causal Effects of Local Air Pollution on Daily Deaths: Effect of Low Levels | |
Schwartz, Joel; Bind, Marie-Abele; Koutrakis, Petros | |
2017 | |
发表期刊 | ENVIRONMENTAL HEALTH PERSPECTIVES
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ISSN | 0091-6765 |
EISSN | 1552-9924 |
出版年 | 2017 |
卷号 | 125期号:1 |
文章类型 | Article |
语种 | 英语 |
国家 | USA |
英文摘要 | BACKGROUND: Although many time-series studies have established associations of daily pollution variations with daily deaths, there are fewer at low concentrations, or focused on locally generated pollution, which is becoming more important as regulations reduce regional transport. Causal modeling approaches are also lacking. OBJECTIVE: We used causal modeling to estimate the impact of local air pollution on mortality at low concentrations. METHODS: Using an instrumental variable approach, we developed an instrument for variations in local pollution concentrations that is unlikely to be correlated with other causes of death, and examined its association with daily deaths in the Boston, Massachusetts, area. We combined height of the planetary boundary layer and wind speed, which affect concentrations of local emissions, to develop the instrument for particulate matter <= 2.5 mu m (PM2.5), black carbon (BC), or nitrogen dioxide (NO2) variations that were independent of year, month, and temperature. We also used Granger causality to assess whether omitted variable confounding existed. RESULTS: We estimated that an interquartile range increase in the instrument for local PM2.5 was associated with a 0.90% increase in daily deaths (95% CI: 0.25, 1.56). A similar result was found for BC, and a weaker association with NO2. The Granger test found no evidence of omitted variable confounding for the instrument. A separate test confirmed the instrument was not associated with mortality independent of pollution. Furthermore, the association remained when all days with PM2.5 concentrations > 30 mu g/m(3) were excluded from the analysis (0.84% increase in daily deaths; 95% CI: 0.19, 1.50). CONCLUSIONS: We conclude that there is a causal association of local air pollution with daily deaths at concentrations below U.S. EPA standards. The estimated attributable risk in Boston exceeded 1,800 deaths during the study period, indicating that important public health benefits can follow from further control efforts. |
领域 | 资源环境 |
收录类别 | SCI-E |
WOS记录号 | WOS:000392195000004 |
WOS关键词 | DIESEL EXHAUST PARTICLES ; HEART-RATE-VARIABILITY ; EXHALED NITRIC-OXIDE ; SHORT-TERM EXPOSURE ; PARTICULATE MATTER ; OXIDATIVE-STRESS ; BLOOD-PRESSURE ; CARDIOVASCULAR-DISEASE ; TRAFFIC PARTICLES ; AMBIENT PARTICLES |
WOS类目 | Environmental Sciences ; Public, Environmental & Occupational Health ; Toxicology |
WOS研究方向 | Environmental Sciences & Ecology ; Public, Environmental & Occupational Health ; Toxicology |
引用统计 | |
文献类型 | 期刊论文 |
条目标识符 | http://119.78.100.173/C666/handle/2XK7JSWQ/23952 |
专题 | 资源环境科学 |
作者单位 | Harvard TH Chan Sch Publ Hlth, Dept Environm Hlth, Landmark Ctr 404-M,401 Pk Dr, Boston, MA 02215 USA |
推荐引用方式 GB/T 7714 | Schwartz, Joel,Bind, Marie-Abele,Koutrakis, Petros. Estimating Causal Effects of Local Air Pollution on Daily Deaths: Effect of Low Levels[J]. ENVIRONMENTAL HEALTH PERSPECTIVES,2017,125(1). |
APA | Schwartz, Joel,Bind, Marie-Abele,&Koutrakis, Petros.(2017).Estimating Causal Effects of Local Air Pollution on Daily Deaths: Effect of Low Levels.ENVIRONMENTAL HEALTH PERSPECTIVES,125(1). |
MLA | Schwartz, Joel,et al."Estimating Causal Effects of Local Air Pollution on Daily Deaths: Effect of Low Levels".ENVIRONMENTAL HEALTH PERSPECTIVES 125.1(2017). |
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