Generalized Synthetic Control Method R package gsynth version 1.4.0 CRAN Task View: CausalInference (https://CRAN.R-project.org/view=CausalInference) CRAN Task View: Econometrics (https://CRAN.R-project.org/view=Econometrics) CRAN Task View: MissingData (https://CRAN.R-project.org/view=MissingData) Conducts causal inference with interactive fixed-effect models. It imputes counterfactuals for each treated unit using control group information based on a linear interactive fixed effects model that incorporates unit-specific intercepts interacted with time-varying coefficients. This method generalizes the synthetic control method to the case of multiple treated units and variable treatment periods, and improves efficiency and interpretability. See Xu (2017) <doi:10.1017/pan.2016.2> for details. Software Depends: R (>= 2.10) Imports: ggplot2 (>= 2.1.0), fect (>= 2.0.0), panelView (>= 1.1.17) Suggests: testthat (>= 3.0.0) Yiqing Xu <yiqingxu@stanford.edu> Comprehensive R Archive Network (CRAN) Yiqing Xu [aut, cre] (ORCID: <https://orcid.org/0000-0003-2041-6671>), Licheng Liu [aut], Ziyi Liu [aut], Shiyun Hu [aut] MIT + file LICENSE (https://CRAN.R-project.org/package=gsynth/LICENSE) 2026-03-27 application/tgz https://CRAN.R-project.org/package=gsynth doi:10.32614/CRAN.package.gsynth