The R Journal: article published in 2014, volume 6:2

gset: An R Package for Exact Sequential Test of Equivalence Hypothesis Based on Bivariate Non-Central t-Statistics
Fang Liu , The R Journal (2014) 6:2, pages 174-184.

Abstract The R package gset calculates equivalence and futility boundaries based on the exact bivariate non-central t test statistics. It is the first R package that targets specifically at the group sequential test of equivalence hypotheses. The exact test approach adopted by gset neither assumes the large-sample normality of the test statistics nor ignores the contribution to the overall Type I error rate from rejecting one out of the two one-sided hypotheses under a null value. The features of gset include: error spending functions, computation of equivalence boundaries and futility boundaries, either binding or nonbinding, depiction of stagewise boundary plots, and operating characteristics of a given group sequential design including empirical Type I error rate, empirical power, expected sample size, and probability of stopping at an interim look due to equivalence or futility.

Received: 2014-08-16; online 2015-01-04
CRAN packages: gsDesign, GroupSeq, Hmisc, PwrGSD, AGSDest, clinfun
CRAN Task Views implied by cited CRAN packages: ClinicalTrials, ExperimentalDesign, Bayesian, Econometrics, Multivariate, OfficialStatistics, ReproducibleResearch, SocialSciences, Survival

This article is licensed under a Creative Commons Attribution 3.0 Unported license .

@article{RJ-2014-033,
  author = {Fang Liu},
  title = {{gset: An R Package for Exact Sequential Test of Equivalence
          Hypothesis Based on Bivariate Non-Central t-Statistics}},
  year = {2014},
  journal = {{The R Journal}},
  doi = {10.32614/RJ-2014-033},
  url = {https://doi.org/10.32614/RJ-2014-033},
  pages = {174--184},
  volume = {6},
  number = {2}
}