本文介绍的是事件研究法 (event study) 在 stata 中的实现命令 eventdd，该命令由 damian clarke 和 kathya tapia schythe 在 2020 年共同开发。与以往关于事件研究法的介绍不同，本文将侧.
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看它前前後後跟的是什麼字。如果全句句子是： i’d like to watch a movie. 但是如果是這樣： he’d finished his assignments.
