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Figure 3 Survival Benefit for Revascularization Versus Medical Therapy by CAD Severity

Kaplan-Meier curves adjusted by Cox analysis for baseline clinical differences and propensity for treatment and stratified by coronary artery disease (CAD) severity were created for the medically treated cohort and a combined revascularization cohort treated by PCI or CABG. The 3 medical curves were subtracted from the 3 corresponding revascularization curves, and their differences were plotted over the 17-year follow-up interval. The absolute percent difference over time depicts the patients out of 100 who survived with revascularization who would not have survived if treated with medical therapy. Abbreviations as in Figure 1. Adapted with permission from Smith et al. (7).