Synthetic Difference-in-Differences

We present a new estimator for causal effects with panel data that builds on insights behind the widely used difference-in-differences and synthetic control methods. Relative to these methods we find, both theoretically and empirically, that this “synthetic difference-in-differences” estimator has d...

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Bibliographic Details
Published in:The American economic review 2021-12, Vol.111 (12), p.4088-4118
Main Authors: Arkhangelsky, Dmitry, Athey, Susan, Hirshberg, David A., Imbens, Guido W., Wager, Stefan
Format: Article
Language:English
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