Simultaneous comparisons of treatments versus control (Dunnett-type tests) for location-scale alternatives

03/11/2021

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by   Ludwig A. Hothorn, et al.

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Commonly, the comparisons of treatment groups versus a control is performed for location effects only where possible scale effects are considered as disturbing. Sometimes scale effects are also relevant, as a kind of early indicator for changes. Here several approaches for Dunnett-type tests for location or scale effects are proposed and compared by a simulation study. Two real data examples are analysed accordingly and the related R-code is available in the Appendix.