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arXiv 1609.01396stat.ME
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魔鬼在尾:分配变量中有测量误差的不连续回归设计

The Devil is in the Tails: Regression Discontinuity Design with Measurement Error in the Assignment Variable

Zhuan Pei, Yi Shen

摘要:

当协变量(分配变量)超过已知阈值时,回归不连续性(RD)研究设计中的识别取决于治疗概率的不连续性。然而,当分配变量的测量有误差时,治疗概率与观察到的误测分配变量之间关系的不连续性可能会消失。因此,分配变量中存在测量误差对处理效应识别构成直接挑战。本文提供了利用误测的分配变量、治疗状态和结局变量识别RD处理效应的充分条件。我们证明识别分别为离散和连续的分配变量,并研究各种估计程序的性质。我们说明了所提出的方法在实证应用中,我们估计医疗补助的占用和私人医疗保险覆盖面的挤出效应。

英文摘要:

Identification in a regression discontinuity (RD) research design hinges on the discontinuity in the probability of treatment when a covariate (assignment variable) exceeds a known threshold. When the assignment variable is measured with error, however, the discontinuity in the relationship between the probability of treatment and the observed mismeasured assignment variable may disappear. Therefore, the presence of measurement error in the assignment variable poses a direct challenge to treatment effect identification. This paper provides sufficient conditions to identify the RD treatment effect using the mismeasured assignment variable, the treatment status and the outcome variable. We prove identification separately for discrete and continuous assignment variables and study the properties of various estimation procedures. We illustrate the proposed methods in an empirical application, where we estimate Medicaid takeup and its crowdout effect on private health insurance coverage.

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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