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Figure 1 Long-Term Outcomes

Kaplan-Meier estimates for (A) death, (B) death or myocardial infarction, and (C) death, myocardial infarction (MI), or target lesion revascularzation in the 4 groups. The sudden survival decrease around 8 years for the 1997 to March 2003 group was the result of an event occurring among a small number of patients still at risk and reflects the instability of the estimator when few patients remain. However, we present the curves to 10 years for the benefit of comparing the 10-year estimates of the 2 earliest groups.