Refining the predictive variables in the “Surgical Risk Preoperative Assessment System” (SURPAS): a descriptive analysis

Table 1 Comparison of Discrimination and Calibration of the Full Eight Variable SURPAS Model with Models without Systemic Sepsis^a

Adverse outcome	C-index			Brier Score
Adverse outcome	Full Model	Full Model with No Systemic Sepsis	Difference	Full Model	Full Model with No Systemic Sepsis	Difference
30-day mortality	0.926	0.922	−0.004	0.0102	0.0103	0.0001
Morbidity	0.801	0.793	−0.008	0.0904	0.0922	0.0018
Readmission	0.699	0.698	−0.001	0.0488	0.0489	0.0001
Infection	0.774	0.761	−0.013	0.0445	0.0450	0.0005
Bleeding/Transfusion	0.850	0.846	−0.004	0.0419	0.0421	0.0002
Pulmonary	0.890	0.882	−0.008	0.0228	0.0237	0.0009
UTI	0.750	0.749	−0.001	0.0145	0.0145	0.0000
VTE	0.765	0.760	−0.005	0.0086	0.0086	0.0000
Cardiac	0.869	0.866	−0.003	0.0062	0.0062	0.0000
Renal	0.859	0.853	−0.006	0.0059	0.0059	0.0000
Neurologic	0.829	0.828	−0.001	0.0021	0.0021	0.0000

^aAbbreviations: SURPAS Surgical Preoperative Risk Assessment System, UTI Urinary tract infection, VTE Venous thromboembolism

ISSN: 1754-9493