Table 4.

Risk-adjusted associations between MELD and outcomes with nested hierarchical regression models.

Characteristics	AOR	95% CI	p-value	AUC Baseline	AUC with MELD
Operative mortality	1.06	(1.04–1.08)	<0.0001	0.7869	0.7904
Major morbidity	1.01	(1.00–1.03)	0.035	0.7485	0.7486
Permanent stroke	1.03	(0.99–1.06)	0.126	0.6805	0.6819
Prolonged ventilation	1.01	(0.99–1.02)	0.295	0.7728	0.7730
Renal failure	1.12	(1.09–1.15)	<0.0001	0.8176	0.8165
Deep sternal wound infection	1.06	(0.95–1.18)	0.299	0.9083	0.8989
Reoperation	1.01	(0.99–1.03)	0.648	0.6983	0.6983

AOR = adjusted odds ratio; CI = confident interval; AUC = area under the curve