>>>>> "Earl" == Earl F Glynn <[EMAIL PROTECTED]> >>>>> on Thu, 14 Jul 2005 12:22:49 -0500 writes:
Earl> The Partek package (www.partek.com) allows only two selections for Multiple Earl> Test Correction: Bonferroni and Dunn-Sidak. Can anyone suggest why Partek Earl> implemented Dunn-Sidak and not the other methods that R has? Is there any Earl> particular advantage to the Dunn-Sidak method? Earl> R knows about these methods (in R 2.1.1): >> p.adjust.methods Earl> [1] "holm" "hochberg" "hommel" "bonferroni" "BH" "BY" "fdr" Earl> [8] "none" Earl> BH is Benjamini & Hochberg (1995) and is also called "fdr" (I wish R's Earl> documentation said this clearly). BY is Benjamini & Yekutieli (2001). The current R docu has >> The '"BH"' and '"BY"' method of Benjamini, Hochberg, and Yekutieli >> control the false discovery rate, the expected proportion of false >> discoveries amongst the rejected hypotheses. The false discovery >> rate is a less stringent condition than the family wise error >> rate, so these methods are more powerful than the others. so both "BH" and "BY" ``are FDR versions''. "fdr" was used - unfortunately - in some older versions of R, so we kept it working as an *alias* for the time being. You should rather not know about it :-) and use "BH" or "BY" (and maybe other methods in the future) instead. Regards, Martin ______________________________________________ R-help@stat.math.ethz.ch mailing list https://stat.ethz.ch/mailman/listinfo/r-help PLEASE do read the posting guide! http://www.R-project.org/posting-guide.html