Overall survival. The risk-adjusted 5-year probabilities of overall survival were 36% (95% CI, 34-38), 33% (95% CI, 32-35), and 29% (95% CI, 25-33) for donors aged (A) 18 to 32, (B) 33 to 50, and (C) >50 years, respectively. The corresponding 8-year probabilities of survival were 34% (95% CI, 31-36), 31% (95% CI, 29-32), and 27% (95% CI, 22-31).