社区事务：卫生干预的异质性影响
Community Matters: Heterogeneous Impacts of a Sanitation Intervention
摘要：
我们研究的有效性，社区一级的信息干预，旨在改善卫生设施，使用群集随机对照试验（RCT）在尼日利亚社区。社区主导的全面环境卫生干预措施目前已成为25个以上国家国家环境卫生政策的一部分。虽然在大规模实施近三年后，平均影响是明显的，但结果隐藏着重要的异质性：干预措施对贫困社区的卫生习惯产生了强烈而持久的影响。这些都是通过增加卫生投资来实现的。我们发现，社区财富，广泛提供的二手数据，是一个关键的统计有效的干预目标。使用来自其他五个类似的随机干预在不同背景下的数据，我们发现，社区层面的财富异质性可以合理化文献中的广泛的影响估计。这项工作提供了合理的外部效度，我们的研究结果，干预规模的影响。JEL代码：O12、I12、I15、I18。
英文摘要：
We study the effectiveness of a community-level information intervention aimed at improving sanitation using a cluster-randomized controlled trial (RCT) in Nigerian communities. The intervention, Community-Led Total Sanitation (CLTS), is currently part of national sanitation policy in more than 25 countries. While average impacts are exiguous almost three years after implementation at scale, the results hide important heterogeneity: the intervention has strong and lasting effects on sanitation practices in poorer communities. These are realized through increased sanitation investments. We show that community wealth, widely available in secondary data, is a key statistic for effective intervention targeting. Using data from five other similar randomized interventions in various contexts, we find that community-level wealth heterogeneity can rationalize the wide range of impact estimates in the literature. This exercise provides plausible external validity to our findings, with implications for intervention scale-up. JEL Codes: O12, I12, I15, I18.
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