Finos, Livio and Farcomeni , Alessio (2009) k-FWER control without multiplicity correction, with application to detection of genetic determinants of multiple sclerosis in Italian twins. [Working Paper] WORKING PAPER SERIES, 7/2009 . , PADOVA (Inedito)
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We show a novel approach for k-FWER control which does not involve any correction, but only testing the hypotheses along a (possibly datadriven) order until a suitable number of p-values are found above the uncorrected α level. p-values can arise from any linear model in a parametric or non parametric setting. The approach is not only very simple and computationally light, but also the data-driven order enhances power when the sample size is small (and also when k and/or m is large). We illustrate the method on an original study about gene discovery in multiple sclerosis, in which were involved a small number of couples of twins, discordant by disease.
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