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Parallel trend test.

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posted on 2024-04-17, 17:44 authored by Hongfeng Zhang, Shuying Wei

Notes: “current” represents the current policy period (2017), "pre_1" and "pre_2" represent 1 year and 2 years before the policy, respectively, and "post_1" and "post_2" represent 1 year and 2 years after the policy, respectively.

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