Table 3. Discrimination analyses for 30-day mortality, 1-year mortality and risk scores.

Statistical analysis	EuroSCORE II	STS
Mean risk ± SD	2.9±2.6	2.1±1.5
30-day mortality AUC*	0.859 (0.812–0.899)	0.845 (0.796–0.886)
1-year mortality AUC*	0.865 (0.818–0.903)	0.814 (0.763–0.859)

*, c-statistic (95% CI). AUC, area under the curve; STS, Society of Thoracic Surgeons.