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st: Nonparametric two way ANOVA
I want to do what I know is a pretty simple calculation but I am constrained
by my dependent variable which is non-normal.
I wish to see if there are differences in viral load stratified by age
category and by race. Viral load is not normal and in my case, I cannot
transform this variable to approximate normal.
I know I could do kruskal wallis or trend tests by race and by age category
individually but I need to do both.
If viral load were normal, I could do:
anova vload agecat race
The Friedman test is the only thing that comes to mind but I don't think
this is what I want.
Any help would be most appreciated.
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