TABLE 1.

Baseline and operative characteristics by risk aversion status

Baseline Characteristics	Risk Averse (n=37,574)	Not Risk Averse (n=40,843)	p-value
Age (years)	65 [57–73]	66 [57–73]	0.274
Female	10481 (27.9%)	12274 (30.1%)	<0.0001
Prior stroke	2179 (5.9%)	2912 (7.3%)	<0.0001
Hypertension	29578 (78.7%)	33513 (82.1%)	<0.0001
Prior myocardial infarction	14654 (39.3%)	16362 (40.5%)	0.002
Heart failure symptoms	10829 (18.2%)	5686 (30.1%)	<0.0001
Ejection fraction (%)	55 [45–60]	55 [45–60]	0.680
Diabetes	14015 (37.3%)	16368 (40.1%)	<0.0001
Dialysis	809 (2.2%)	1183 (2.9%)	<0.0001
Last creatinine level (mg/Dl)	1.0 [0.8–1.2]	1.0 [0.8–1.2]	0.001
Moderate/severe chronic lung disease	3148 (8.5%)	3656 (9.2%)	0.0006
Peripheral arterial disease	7660 (12.9%)	2940 (15.5%)	<0.0001
Endocarditis	728 (1.2%)	396 (2.1%)	<0.0001
Urgent or emergent status	21143 (56.3%)	19529 (47.9%)	<0.0001
Predicted risk of mortality	1.3 [0.7–2.9]	1.5 [0.7–3.2]	<0.0001
High risk	4590 (12.2%)	5999 (14.7%)	<0.0001
Very high risk	1499 (4.0%)	2030 (5.0%)	<0.0001
Extreme risk	410 (1.1%)	522 (1.3%)	0.016
Operative Characteristics			p-value
Prior cardiac surgery	1501 (4.7%)	2201 (6.4%)	<0.0001
CABG	32669 (87.0%)	34982 (85.7%)	<0.0001
Mitral Valve Surgery	2442 (6.5%)	2970 (7.3%)	<0.0001
Aortic Valve Surgery	5925 (15.8%)	6869 (16.8%)	<0.0001
Combination Valve/CABG	3,463 (9.2%)	3,980 (9.7%)	<0.0001
Cross Clamp Time (min)	69 [53–88]	71 [54–94]	<0.0001
Cardiopulmonary bypass Time (min)	98 [77–124]	97 [76–125]	0.004

CABG = coronary artery bypass grafting