The parallel trend assumption is satisfied at the macroscopic level as well.
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https://figshare.com/articles/dataset/The_parallel_trend_assumption_is_satisfied_at_the_macroscopic_level_as_well_/5365309
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资源简介：
The inter-city difference-in-differences coefficient is insignificant for the periods preceding the treatment.
创建时间：
2017-09-01
