I've run a Kruskal-Wallis analysis (in SAS) and found there is a significant difference between the groups. Therefore, I would like to find out between which groups that difference actually occurs. How do I proceed with multiple comparisons (in SAS) after a Kruskal-Wallis analysis?
Thanks for your help!
I read that I can do the pairwise comparisons with a Wilcoxon two-sample test but will need to adjust the p-values with a Bonferroni correction (bc of the multiple comparisons).
I've heard this can be done one of two ways. First way: adjusted p-value=(alpha/# of tests). Second way: use Proc Multtest in SAS. I tried both and got radically different results.
Have either of you done anything like this?
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