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EquiTrends: Equivalence Testing for Pre-Trends in Difference-in-Differences Designs

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>.

Version: 1.0.0
Depends: R (≥ 3.5.0)
Imports: clubSandwich, nloptr, dplyr, rlang, plm, Rcpp (≥ 1.0.12), RcppParallel, stats, VGAM
LinkingTo: Rcpp, RcppArmadillo, RcppParallel
Suggests: testthat (≥ 3.0.0)
Published: 2024-09-03
DOI: 10.32614/CRAN.package.EquiTrends
Author: Ties Bos [aut, cre], Martin Schumann [ctb]
Maintainer: Ties Bos <tc.bos at student.maastrichtuniversity.nl>
BugReports: https://github.com/TiesBos/EquiTrends/issues
License: MIT + file LICENSE
URL: https://github.com/TiesBos/EquiTrends
NeedsCompilation: yes
Materials: README NEWS
CRAN checks: EquiTrends results

Documentation:

Reference manual: EquiTrends.pdf

Downloads:

Package source: EquiTrends_1.0.0.tar.gz
Windows binaries: r-devel: EquiTrends_1.0.0.zip, r-release: EquiTrends_1.0.0.zip, r-oldrel: EquiTrends_1.0.0.zip
macOS binaries: r-release (arm64): EquiTrends_1.0.0.tgz, r-oldrel (arm64): EquiTrends_1.0.0.tgz, r-release (x86_64): EquiTrends_1.0.0.tgz, r-oldrel (x86_64): EquiTrends_1.0.0.tgz

Linking:

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These binaries (installable software) and packages are in development.
They may not be fully stable and should be used with caution. We make no claims about them.
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