Figure 2  .

(A) Actuarial freedom from death or transplantation (including 30 day deaths) following mitral valve replacement; 70% confidence limits are indicated at 5 and 10 years. The numbers of patients originally at risk for the event at the time of the operation and at 5 and 10 years follow up are given in parentheses in this and all the following curves. These numbers become very small towards maximum follow up time. (B) Actuarial freedom from bleeding. (C) Actuarial freedom from non-structural valve dysfunction. (D) Event-free survival.