Two-Stage Difference-in-Differences Following Gardner (2021)

Estimates Two-way Fixed Effects difference-in-differences/event-study models using the approach proposed by Gardner (2021). To avoid the problems caused by OLS estimation of the Two-way Fixed Effects model, this function first estimates the fixed effects and covariates using untreated observations and then in a second stage, estimates the treatment effects.


Reference manual

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0.4.0 by Kyle Butts, a month ago

Browse source code at

Authors: Kyle Butts [aut, cre] , John Gardner [aut] , Grant McDermott [ctb]

Documentation:   PDF Manual  

MIT + file LICENSE license

Imports dplyr, magrittr, ggplot2, glue, stats, stringr, rlang, tibble, tidyr, rsample, purrr, cli, Matrix, Rcpp, did, broom, methods, staggered, didimputation, gt

Depends on fixest

Suggests rmarkdown, knitr, haven, testthat

Linking to RcppArmadillo, Rcpp

See at CRAN