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Superfund cleanups and children's lead exposure

机译:超级基金清理和儿童铅暴露

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This study evaluates the effect of EPA's Superfund cleanup program on childrens lead exposure. We linked two decades of blood lead level (BLL) measurements from children in six states with data on Superfund sites and other lead risk factors. We used quasi-experimental methods to identify the causal effect of proximity to Superfund cleanups on rates of elevated BLL. We estimated a difference-in-difference model comparing the change in elevated BLL of children closer to versus farther from lead-contaminated sites before, during, and after cleanup. We also estimated a triple difference model including children near hazardous sites with minimal to no lead contamination as a comparison group. We used spatial fixed effects and matching to minimize potential bias from unobserved differences between the treatment and comparison groups. Results indicate that Superfund cleanups lowered the risk of elevated BLL for children living within 2 km of lead-contaminated sites 13 to 26 percent. Published by Elsevier Inc.
机译:这项研究评估了EPA的Superfund清理计划对儿童铅接触的影响。我们将来自六个州的儿童的二十年血铅水平(BLL)测量值与Superfund网站上的数据和其他铅风险因素相关联。我们使用准实验方法来确定接近Superfund清理对BLL升高率的因果关系。我们估计了一个差异差异模型,该模型比较了在清理之前,期间和之后,距离铅污染站点较近或远离铅污染站点的儿童的升高的BLL变化。我们还估计了一个三重差异模型,作为比较组,其中包括危险场所附近的儿童,铅污染极少甚至没有。我们使用了空间固定效应并进行了匹配,以最大程度地减少治疗组和对照组之间未观察到的差异带来的潜在偏差。结果表明,Superfund清理将生活在铅污染场地2公里内的儿童的BLL升高风险降低了13%至26%。由Elsevier Inc.发布

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