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2003 Dec 01
2
wilcoxon-pratt signed rank test in R - drug-effiacy
Hi. I'm going to introduce the R-package for a group of medical doctors later this week and is a little confused about there use of a test named "willcoxon-pratt" for testing if the clinical and biochemical markers has decreased significantly after the use of some drugs for a group of patients. Looking into the R-functions I would in R recommand using a matched-pairs Wilcoxon test with a formula like: wilcox.test(pre,post,alternative='gre...