A Wilcoxon-type test for trend.
An extension of the Wilcoxon rank-sum test is developed to handle the situation in which a variable is measured for individuals in three or more (ordered) groups and a non-parametric test for trend across these groups is desired. The uses of the test are illustrated by two examples from cancer research.
D000704:Analysis of Variance; D000818:Animals; D002460:Cell Line; D004812:Epidemiologic Methods; D005260:Female; D006801:Humans; D008297:Male; D009362:Neoplasm Metastasis; D009369:Neoplasms / Q000401:mortality*; D009374:Neoplasms, Experimental / Q000401:mortality; D012306:Risk