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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
mathematics
Performance of selected nonparametric tests for discrete longitudinal data under different patterns of missing data
Journal of Biopharmaceutical Statistics, Volume 19, No. 1, Year 2009
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Description
Comparison of changes over time of a continuous response variable between treatment groups is often of main interest in clinical trials. When the distributional properties of the continuous response variable are not regular enough, or when the response is discrete, nonparametric techniques have been used. The relative performances of selected repeated measures nonparametric two-sample tests proposed by Wei and Lachin, Koziol, Wei and Johnson, and the adapted Wilcoxon Rank-Sum test are compared through simulations based on quality of life data. The Wilcoxon Rank-Sum test is the most powerful and is not significantly affected by the different patterns of missing data. Copyright © Taylor & Francis Group, LLC.
Authors & Co-Authors
Chirwa, Tobias Freeman
Malawi, Zomba
Chancellor College Malawi
Bogaerts, Jan
Belgium, Brussels
European Organisation for Research and Treatment of Cancer
Chirwa, Esnat D.
Malawi, Zomba
Chancellor College Malawi
Kazembe, Lawrence N.M.
Malawi, Zomba
Chancellor College Malawi
Statistics
Citations: 4
Authors: 4
Affiliations: 2
Identifiers
Doi:
10.1080/10543400802536248
ISSN:
10543406
e-ISSN:
15205711
Research Areas
Disability
Study Design
Cohort Study