Figure 1

Predicted and observed mean operative mortality among patients with EuroSCORE > 20 compared to those with EuroSCORE ≤ 20. Among high-risk patients with logistic EuroSCORE > 20, the actual operative mortality following AVR was significantly lower than that predicted by EuroSCORE (11.4% vs. 38.7%, respectively, O/E 0.29, 95% CI 0.15–0.52, P < 0.05).