I am performing an analysis comparing my data against an NHANES dataset. I am interested in testing the difference in means between the two groups, stratified by two variables (gender and age). My data is heavily right skewed, so I will need to use a non parametric approach. However, my own data is not weighted, but NHANES's data is. How best would I go about performing this comparison? Would I still be able to use proc surveyfreq or proc surveymeans?
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