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arXiv 2012.03432stat.ME
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基于U统计量的处理效应异质性检验

A U-statistic-based test of treatment effect heterogeneity

Maozhu Dai, Hal S. Stern

摘要:

许多研究的目标是确定不同亚群之间是否存在处理效应异质性。在本文中,我们提出了一个基于U-统计量的非参数检验的原假设,处理效应是相同的,在不同的亚组。建议的测试提供了更多的权力比标准的参数测试时,后者的基本分布假设被违反。我们应用该方法的数据从经济研究的计划有效性,并发现有处理效应异质性在不同的亚群。

英文摘要:

Many studies include a goal of determining whether there is treatment effect heterogeneity across different subpopulations. In this paper, we propose a U-statistic-based non-parametric test of the null hypothesis that the treatment effects are identical in different subgroups. The proposed test provides more power than the standard parametric test when the underlying distribution assumptions of the latter are violated. We apply the method to data from an economic study of program effectiveness and find that there is treatment effect heterogeneity in different subpopulations.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

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