The R Journal: article published in 2020, volume 12:1

npordtests: An R Package of Nonparametric Tests for Equality of Location Against Ordered Alternatives PDF download
Bulent Altunkaynak and Hamza Gamgam , The R Journal (2020) 12:1, pages 147-171.

Abstract Ordered alternatives are an important statistical problem in many situation such as increased risk of congenital malformation caused by excessive alcohol consumption during pregnancy life test experiments, drug-screening studies, dose-finding studies, the dose-response studies, age-related response. There are numerous other examples of this nature. In this paper, we present the npordtests package to test the equality of locations for ordered alternatives. The package includes the Jonckheere Terpstra, Beier and Buning’s Adaptive, Modified Jonckheere-Terpstra, Terpstra-Magel, Ferdhiana Terpstra-Magel, KTP, S and Gaur’s Gc tests. A simulation study is conducted to determine which test is the most appropriate test for which scenario and to suggest it to the researchers.

Received: 2019-05-14; online 2020-09-10
CRAN packages: clinfun, jtGWAS, fastJT, kSamples, StatCharrms, PMCMRplus, npordtests
CRAN Task Views implied by cited CRAN packages: ClinicalTrials, Environmetrics, Survival

CC BY 4.0
This article is licensed under a Creative Commons Attribution 4.0 International license.

  author = {Bulent Altunkaynak and Hamza Gamgam},
  title = {{npordtests: An R Package of Nonparametric Tests for Equality
          of Location Against Ordered Alternatives}},
  year = {2020},
  journal = {{The R Journal}},
  doi = {10.32614/RJ-2020-022},
  url = {},
  pages = {147--171},
  volume = {12},
  number = {1}