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Migrating from other DiD packages, plus deeper dives into fusion structures, inference, simulation, and the comparison estimators.

Coming from did or etwfe? Bringing your data into fetwfe

Choosing a fusion structure: cohort vs. event-study penalties

Standard errors in fetwfe: the variance decomposition and se_type

Simultaneous confidence bands and the zero-effect test

High-dimensional inference: debiasedATT() when p >= NT

Simulation Vignette for FETWFE: From Coefficients to True Treatment Effects

Comparison Estimators: ETWFE and BETWFE