Hi, I am currently doing multi-level-regressions, looking at the link between sleep and social media use. proc surveylogistic data=sleep; *unadjusted; cluster id2; class smu (ref='active'); model sleep_rec (event='not meeting sleep recommandations') = smu; weight wtcan; run; I want to add sensitivity analysis to see if there are gender differences in different social media use categories. I have no idea where to start. Thank you so much
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