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Yi-Hong Liu

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Preprint Oct 2026

Matched Triple-Differences: A Framework for Covariate Adjustment

A common empirical strategy in triple-differences (DDD) is to include either covariate trends or covariate levels to a three-way fixed effects (3WFE) regression. This strategy is typically motivated by the conditional parallel gaps assumption which assumes that deviations from parallel trends are similar among units wi...

Yi-Hong Liu · 0 citations

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