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 <tc.bos@student.maastrichtuniversity.nl>
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) <doi:10.1080/07350015.2024.2308121>. 
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: 2024-08-29 17:40:12 UTC; tiesbos
Author: Ties Bos [aut, cre],
  Martin Schumann [ctb]
Depends: R (>= 3.5.0)
Repository: CRAN
Date/Publication: 2024-09-03 15:40:02 UTC
Built: R 4.6.0; aarch64-apple-darwin23; 2026-04-26 12:56:26 UTC; unix
Archs: EquiTrends.so.dSYM
