Extended Two-Way Fixed Effects R package etwfe version 0.6.2 CRAN Task View: CausalInference (https://CRAN.R-project.org/view=CausalInference) CRAN Task View: Econometrics (https://CRAN.R-project.org/view=Econometrics) Convenience functions for implementing extended two-way fixed effect regressions a la Wooldridge (2023, 2025) <doi:10.1093/ectj/utad016>, <doi:10.1007/s00181-025-02807-z>. Software Imports: fixest (>= 0.13.2), data.table (>= 1.15.0), Formula, marginaleffects (>= 0.29.0), stats, tinyplot (>= 0.6.0) Suggests: broom, did (>= 2.3.0), ggplot2, knitr, modelsummary (>= 2.2.0), rmarkdown, tinytest Grant McDermott <contact@grantmcdermott.com> Comprehensive R Archive Network (CRAN) Grant McDermott [aut, cre] (ORCID: <https://orcid.org/0000-0001-7883-8573>), Frederic Kluser [ctb], Ulrich Morawetz [ctb] MIT + file LICENSE (https://CRAN.R-project.org/package=etwfe/LICENSE) 2026-03-23 application/tgz https://CRAN.R-project.org/package=etwfe doi:10.32614/CRAN.package.etwfe