[R] Kruskal Wallis and pos-hoc Kruskal Wallis

[Raquel Mendes]

Hi all,

I performed a Kruskal-Wallis test on 4 groups, 13 variables, using
kruskal.test. I then applied a pos-hoc on the variables significant at
p<0.05, using kruskalmc. The problem is that two of the significant
variables on the kruskal-wallis test (with p=0.03276 and p=0.03537) didn´t
showed significant diferences between any groups in the pos hoc test.

I'm fairly new to R and not exactly a statistic genius, so I don´t know if
I am doing something wrong or just misinterpreting the results.

I am missing something here? Is there some p adjustment in these tests that
I don´t now about?

Thank you,

Raquel Mendes

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