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.">

did2s: Two-Stage Difference-in-Differences Following Gardner (2021) (original) (raw)

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 ORCID iD [aut, cre], John Gardner ORCID iD [aut], Grant McDermott ORCID iD [ctb], Laurent Berge [ctb]
Maintainer: Kyle Butts
License: MIT + file
URL: https://kylebutts.github.io/did2s/
NeedsCompilation: no
Citation: did2s citation info
Materials: README, NEWS
In views: Econometrics
CRAN checks: did2s results

Documentation:

Downloads:

Linking:

Please use the canonical formhttps://CRAN.R-project.org/package=did2sto link to this page.