Package: EquiTrends Type: Package Title: Equivalence Testing for Pre-Trends in Difference-in-Differences Designs Version: 1.0.0 Authors@R: c( person("Ties", "Bos", email = "tc.bos@student.maastrichtuniversity.nl", role = c("aut","cre")), person("Martin", "Schumann", email = "m.schumann@maastrichtuniversity.nl", role = "ctb")) Maintainer: Ties Bos Description: Testing for parallel trends is crucial in the Difference-in-Differences framework. To this end, this package performs equivalence testing in the context of Difference-in-Differences estimation. It allows users to test if pre-treatment trends in the treated group are “equivalent” to those in the control group. Here, “equivalence” means that rejection of the null hypothesis implies that a function of the pre-treatment placebo effects (maximum absolute, average or root mean squared value) does not exceed a pre-specified threshold below which trend differences are considered negligible. The package is based on the theory developed in Dette & Schumann (2024) . License: MIT + file LICENSE Imports: clubSandwich, nloptr, dplyr, rlang, plm, Rcpp (>= 1.0.12), RcppParallel, stats, VGAM LinkingTo: Rcpp, RcppArmadillo, RcppParallel URL: https://github.com/TiesBos/EquiTrends BugReports: https://github.com/TiesBos/EquiTrends/issues RoxygenNote: 7.3.2 Encoding: UTF-8 Suggests: testthat (>= 3.0.0) Config/testthat/edition: 3 NeedsCompilation: yes Packaged: 2026-10-29 09:51:24 UTC; root Author: Ties Bos [aut, cre], Martin Schumann [ctb] Depends: R (>= 3.5.0) Repository: https://cran.r-universe.dev Date/Publication: 2024-09-04 02:51:14 UTC RemoteUrl: https://github.com/cran/EquiTrends RemoteRef: HEAD RemoteSha: da1101b9537ed394309a8a8cc9705105e277256e