Table 3:

Predicted and observed mortalities by EuroSCORE II and STS risk levels for the entire patient cohort

EuroSCORE II	Patients (deaths)	Observed mortality rate (95% CI)	Predicted mortality rate (95% CI)	Recalibration	P-value
Low risk	143 (4)	2.1 (0.1–5.5)	0.9 (0.87–0.91)	3.14	0.00
Medium risk	143 (6)	4.2 (0.9–7.5)	1.4 (1.4–1.5)	2.93
High risk	142 (24)	16.9 (10.7–23.1)	2.8 (2.6–3.1)	5.94
Total	428 (34)	7.9 (5.4–10.5)	1.7 (1.6–1.8)
STS risk model
Low risk	143 (10)	7.0 (2.8–11.2)	1.8 (1.7–1.9)	3.88	0.10
Medium risk	143 (6)	4.2 (0.9–7.5)	4.9 (4.8–5.1)	0.85
High risk	142 (18)	12.7 (7.1–18.2)	10.7 (10.1–11.4)	1.18
Total	428 (34)	7.9 (5.4–10.5)	5.8 (5.4–6.2)

STS: Society of Thoracic Surgeons.