[R] Mann-Whitney by group

Oxenstierna david.chertudi at gmail.com
Tue Jul 10 22:45:56 CEST 2012

This works very well--thanks so much.

By way of extension:  how would one extract elements from the result object?

For example:

thing<=apply(Dtb[,3:10], 2, function(x) wilcox.test(x~Dtb$Group))


Does not provide a list of p-values as it would in a regression object. 
Ideally, I would like to be able to extract the W score and p-value by

Any ideas greatly appreciated!

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