Although at enrollment, patients had no known coronary heart disease, the risk of cardiovascular events, including major coronary events and revascularization procedures, was also substantially reduced. On the basis of our data, 46 patients (95 percent confidence interval, 24 to 243)would need to be treated for five years to prevent one stroke, 29 patients (95 percent confidence interval, 18 to 75) to prevent one major cardiovascular event, and 32 patients (95 percent confidence interval, 22 to 59) to avoid one revascularization procedure. These benefits were observed despite the increased use of openlabel nonstudy statins during the study, a result suggesting that the effect is robust.