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Figure 2 Utilization of cardiovascular diagnostic tests and therapeutics across creatinine clearance stratum. Numbers at the top of each bar are the total number of patients within each creatinine clearance stratum, and the percentages represented by each bar are the respective portion of that total number. Black bars = catheterization; white bars = glycoprotein IIb/IIIa antagonist; hatched bars = percutaneous coronary intervention; striped bars = coronary artery bypass graft surgery.