Difference-in-Differences with Variation in Treatment Timing¶
Goodman-Bacon, A. (2021). Difference-in-Differences with Variation in Treatment Timing. Journal of Econometrics, 225(2), 254-277.
Cited by¶
1 citation across 1 artifact.
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Mechanisms¶
- Event-Study Panel Plot
- Second, when adoption is staggered and the plot is built from a naive two-way fixed-effects specification, already-treated units silently serve as controls for later-treated ones
This sourceDecomposes staggered-adoption TWFE estimates into two-group comparisons and shows how already-treated controls can bias estimates, including reversing their sign when effects evolve over time.
- Second, when adoption is staggered and the plot is built from a naive two-way fixed-effects specification, already-treated units silently serve as controls for later-treated ones
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Registry ID ref:0cfe02799d53 · see in the full table