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Confidence Intervals of Treatment Effects in Panel Data Models with Interactive Fixed Effects

Xingyu Li, Yan Shen and Qiankun Zhou

Papers from arXiv.org

Abstract: We consider the construction of confidence intervals for treatment effects estimated using panel models with interactive fixed effects. We first use the factor-based matrix completion technique proposed by Bai and Ng (2021) to estimate the treatment effects, and then use bootstrap method to construct confidence intervals of the treatment effects for treated units at each post-treatment period. Our construction of confidence intervals requires neither specific distributional assumptions on the error terms nor large number of post-treatment periods. We also establish the validity of the proposed bootstrap procedure that these confidence intervals have asymptotically correct coverage probabilities. Simulation studies show that these confidence intervals have satisfactory finite sample performances, and empirical applications using classical datasets yield treatment effect estimates of similar magnitudes and reliable confidence intervals.

Date: 2022-02
New Economics Papers: this item is included in nep-ban and nep-ecm
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