Table 5.

Multivariable association between baseline and surgical characteristics and 30 day mortality. (C-statistic=0.826).

Variable	HR (95% CI)	p
Creatinine, HR for 0.1 mg/dL increase		<0.0001
≤1.0	0.67 (0.51, 0.89)
1.0–1.4	1.52 (1.26, 1.82)
ESVI, HR for 100 ml increase	2.73 (1.50, 4.98)	0.0010
Age, HR for 10 year increase	1.47 (1.12, 1.93)	0.0052
Moderate or severe mitral regurgitation	2.35 (1.27, 4.34)	0.0065
Current angina	2.08 (1.17, 3.70)	0.0126
Atrial flutter or fibrillation	1.97 (1.14, 3.39)	0.0153
Hemoglobin, HR for 1 g/dL increase		0.0178
<12.5	1.41 (0.91, 2.19)
12.5–15.5	0.68 (0.51, 0.90)
>15.5	1.88 (1.19, 2.96)
Cardiopulmonary bypass time > 120 minutes	1.83 (1.10, 3.04)	0.0199
Body mass index, HR for 1 kg/m2 increase		0.0202
0–25	0.86 (0.76, 0.97)
25–30	1.21 (1.04, 1.41)
Mitral valve procedure	0.43 (0.20, 0.90)	0.0251
Peripheral vascular disease	1.84 (1.07, 3.18)	0.0278
Statin and at least one ASA, clopidogrel, or warfarin	0.58 (0.36, 0.95)	0.0285
Duke CAD Index, HR for 10 point increase to 53	1.46 (1.00, 2.13)	0.0485