I did try that but I am struggling with the reference lines...heres a data overview: PID Clinic Name Aspirin aspirin_bl aspirin15 bloodp bloodp_bl bloodp_15 chol chol_bl chol_15 smoke smoke_bl smoke15 101 ajsjddjdjd 0.682 0.672 0.783 0.368 0.388 0.467 0.728 0.452 0.567 0.257 0.652 0.789 102 skskks . . . Essentially, aspirin, bloodp, chol, and smoke contain 6 measures for each clinic(so 1200 values). Aspirin_BL bloodp_bl, chol_bl and smoke_bl contain that clinics baseline (1st measure) and those variable with 15 are the clinics 6th measure (the baseline and 15 month variables only have 200 values each, one for each clinic). Therefore, the histograms are based on the aspirin, bloodp, chol, and smoke variables and the reference lines are for the clinics baseline and 15 month. I hope this helps and I appreciate your help!
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