Air quality warnings and outdoor activities: evidence from Southern California using a regression discontinuity design
Air quality warnings and outdoor activities: evidence from Southern California using a regression discontinuity design
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DOI：
10.1136/jech.2008.081489
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发表时间：
2010-10-01
影响因子：
6.3
通讯作者：
Neidell, Matthew
中科院分区：
文献类型：
--
作者：
Neidell, Matthew
背景进行了一项研究，以评估与地面臭氧对户外活动在南加州的空气质量警报的影响。方法收集两个主要的户外设施的总的日常出勤率的数据，并与观察和预测的空气质量和气象学在日常水平合并。一个准实验回归不连续设计被用来估计的影响warning.Results出席显着下降时，第1阶段的空气质量警报（烟雾警报）发出。与预期一致，响应更大的人群更有可能被认为是易感的，更有可能是当地居民。结论空气质量警报是一个重要的政策工具，保护公众的健康，从高水平的环境空气污染。
Background A study was undertaken to assess the impact of air quality warnings associated with ground-level ozone on outdoor activities in Southern California.Methods Data on aggregate daily attendance at two major outdoor facilities were collected and merged with observed and forecasted air quality and meteorology at the daily level. A quasi-experimental regression discontinuity design was used to estimate the impact of warnings.Results Attendance declined significantly when stage 1 air quality warnings ('smog alerts') were issued. Consistent with expectations, responses were greater for populations more likely to be considered susceptible and more likely to be local residents.Conclusions Air quality warnings are an important policy tool for protecting the public's health from high levels of ambient air pollution.