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- W2043763571 abstract "Traditional parametric (t, F) and nonparametric (Mann-Whitney-Wilcoxon U, Kruskal-Wallis H) statistics are sensitive to heterogeneity of variance (heteroscedasticity). Moreover, there are theoretical reasons to expect, and empirical results to document, the existence of heteroscedasticity in clinical data. Transformations to reduce heteroscedasticity are problematic. This article reviews the literature on robust methods that are available and that should be widely used to control rate of Type I error and maintain power. No one robust method is ideal for all situations, but such methods are superior to the traditional tests. Specific recommendations are made for application under various conditions of heteroscedasticity." @default.
- W2043763571 created "2016-06-24" @default.
- W2043763571 creator A5071854465 @default.
- W2043763571 date "2000-01-01" @default.
- W2043763571 modified "2023-10-02" @default.
- W2043763571 title "Heterogeneity of variance in clinical data." @default.
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