The Partek package (www.partek.com) allows only two selections for Multiple Test Correction: Bonferroni and Dunn-Sidak. Can anyone suggest why Partek implemented Dunn-Sidak and not the other methods that R has? Is there any particular advantage to the Dunn-Sidak method? R knows about these methods (in R 2.1.1):
> p.adjust.methods [1] "holm" "hochberg" "hommel" "bonferroni" "BH" "BY" "fdr" [8] "none" BH is Benjamini & Hochberg (1995) and is also called "fdr" (I wish R's documentation said this clearly). BY is Benjamini & Yekutieli (2001). I found a few hits from Google on Dunn-Sidak, but I'm curious if anyone can tell me on a "conservative-liberal" scale, where the Dunn-Sidak method falls? My guess is it's less conservative than Bonferroni (but aren't all the other methods?), but how does it compare to the other methods? A limited numerical experiment suggested this order to me: bonferroni (most conservative), hochberg and holm about the same, BY, BH (also called fdr), and then none. Thanks for any of thoughts on this. efg ______________________________________________ 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
