Difference-in-Differences with Unpoolable Data R package undidR version 3.0.2 A framework for estimating difference-in-differences with unpoolable data, based on Karim, Webb, Austin, and Strumpf (2025) <doi:10.48550/arXiv.2403.15910>. Supports common or staggered adoption, multiple groups, and the inclusion of covariates. Also computes p-values for the aggregate average treatment effect on the treated via the randomization inference procedure described in MacKinnon and Webb (2020) <doi:10.1016/j.jeconom.2020.04.024>. Software Depends: R (>= 4.0) Imports: graphics, grDevices, stats, utils Suggests: knitr, rmarkdown, testthat (>= 3.0.0) Eric Jamieson <ericbrucejamieson@gmail.com> Comprehensive R Archive Network (CRAN) Eric Jamieson [aut, cre, cph] MIT + file LICENSE (https://CRAN.R-project.org/package=undidR/LICENSE) 2026-03-02 application/tgz https://CRAN.R-project.org/package=undidR doi:10.32614/CRAN.package.undidR