arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1905.04443econ.EM
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多组断点回归设计用于异质因果效应估计

Regression Discontinuity Design with Multiple Groups for Heterogeneous Causal Effect Estimation

Takayuki Toda, Ayako Wakano, Takahiro Hoshino

摘要:

我们提出了一种新的估计方法,异质因果效应,利用回归不连续性(RD)设计的多个数据集具有不同的阈值。标准RD设计是应用研究中常用的设计方法,但其结果很有限,平均处理效应只能在运行变量的阈值上估计。在应用研究中,来自不同地区或公司的数据库之间的阈值往往不同。例如,奖学金的门槛因州而异。基于增广逆概率加权局部线性估计器的估计器可以在温和的条件下估计阈值之间任意点对运行变量的平均影响,同时该方法可以调整数据集之间协变量分布的差异。我们进行了模拟,以研究所提出的估计在有限样本的性能。

英文摘要:

We propose a new estimation method for heterogeneous causal effects which utilizes a regression discontinuity (RD) design for multiple datasets with different thresholds. The standard RD design is frequently used in applied researches, but the result is very limited in that the average treatment effects is estimable only at the threshold on the running variable. In application studies it is often the case that thresholds are different among databases from different regions or firms. For example thresholds for scholarship differ with states. The proposed estimator based on the augmented inverse probability weighted local linear estimator can estimate the average effects at an arbitrary point on the running variable between the thresholds under mild conditions, while the method adjust for the difference of the distributions of covariates among datasets. We perform simulations to investigate the performance of the proposed estimator in the finite samples.

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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