Package: fetwfe
Title: Fused Extended Two-Way Fixed Effects
Version: 1.56.0
Authors@R: 
    person(given = "Gregory", family = "Faletto", email = "gfaletto@gmail.com", role = c("aut", "cre"), comment = c(ORCID = "0000-0001-8298-1401"))
Maintainer: Gregory Faletto <gfaletto@gmail.com>
Depends: R (>= 4.1.0)
Description: Calculates the fused extended two-way fixed effects
        (FETWFE) estimator for unbiased and efficient estimation of
        difference-in-differences in panel data with staggered
        treatment adoption. This estimator eliminates bias inherent in
        conventional two-way fixed effects estimators, while also
        employing a novel bridge regression regularization approach to
        improve efficiency and yield valid standard errors. Also
        implements extended TWFE (etwfe) and bridge-penalized ETWFE
        (betwfe). Provides S3 classes for streamlined workflow and
        supports flexible tuning (ridge and rank-condition guarantees),
        automatic covariate centering/scaling, and detailed overall and
        cohort-specific effect estimates with valid standard errors.
        Includes simulation and formatting utilities, extensive
        diagnostic tools, vignettes, and examples. See Faletto (2025)
        (<doi:10.48550/arXiv.2312.05985>).
URL: https://github.com/gregfaletto/fetwfePackage
BugReports: https://github.com/gregfaletto/fetwfePackage/issues
License: MIT + file LICENSE
Encoding: UTF-8
Roxygen: list(markdown = TRUE)
Imports: generics, glmnet, grpreg, Matrix (>= 1.6-0), mvtnorm
Suggests: bacondecomp, knitr, rmarkdown, dplyr, did, expm, ggplot2,
        broom, lme4, testthat (>= 3.0.0), tibble
VignetteBuilder: knitr
Config/roxygen2/version: 8.0.0
Repository: https://gregfaletto.r-universe.dev
Date/Publication: 2026-07-04 05:01:00 UTC
RemoteUrl: https://github.com/gregfaletto/fetwfepackage
RemoteRef: HEAD
RemoteSha: af986b3e73e3a199689a61444bee4cb0cabce346
NeedsCompilation: no
Packaged: 2026-07-04 06:27:54 UTC; root
Author: Gregory Faletto [aut, cre] (ORCID:
    <https://orcid.org/0000-0001-8298-1401>)