Estimates Two-way Fixed Effects difference-in-differences/event-study models using the approach proposed by Gardner (2021) <doi:10.48550/arXiv.2207.05943>. 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.
| Version: | 1.2.0 |
| Depends: | R (≥ 3.5.0),fixest (≥ 0.13.2) |
| Imports: | boot,broom,data.table,did,didimputation,dreamerr,ggplot2,HonestDiD,Matrix,rlang,staggered, stats |
| Suggests: | haven,knitr,rmarkdown,testthat (≥ 3.0.0) |
| Published: | 2025-09-19 |
| DOI: | 10.32614/CRAN.package.did2s |
| Author: | Kyle Butts [aut, cre], John Gardner [aut], Grant McDermott [ctb], Laurent Berge [ctb] |
| Maintainer: | Kyle Butts <buttskyle96 at gmail.com> |
| License: | MIT + fileLICENSE |
| URL: | https://kylebutts.github.io/did2s/ |
| NeedsCompilation: | no |
| Citation: | did2s citation info |
| Materials: | README,NEWS |
| In views: | Econometrics |
| CRAN checks: | did2s results |