Table 2 Post-matched characteristics of patients

Age (years)

66.0 (59.0, 74.0)

65.0 (57.0, 74.0)

0.514

Female

59 (29.1%)

47 (23.2%)

0.175

Body mass index

27.6 (24.2, 30.4)

26.9 (24.6, 30.5)

0.716

Cerebrovascular disease

32 (15.8%)

35 (17.2%)

0.688

Peripheral vascular disease

28 (13.8%)

24 (11.8%)

0.553

Diabetes

87 (42.9%)

103 (50.7%)

0.112

Congestive heart failure

55 (27.1%)

60 (29.6%)

0.582

Dialysis

8 (3.9%)

6 (3.0%)

0.587

Preoperative creatinine

1.00 (0.90, 1.30)

1.00 (0.90, 1.30)

0.953

Chronic obstructive pulmonary disease

69 (34.0%)

72 (35.5%)

0.755

Hypercholesterolemia

74 (36.5%)

75 (37.0%)

0.918

Hypertension

156 (76.9%)

158 (77.8%)

0.812

Ejection fraction (%)

40 (30, 50)

40 (30, 50)

0.914

Prior cardiac operation

5 (2.5%)

3 (1.5%)

0.475

Preoperative anticoagulation

167 (82.3%)

168 (82.8%)

0.896

Preoperative antiplatelet

54 (26.6%)

54 (26.6%)

1.000

Preoperative intravenous nitroglycerin

28 (13.8%)

29 (14.3%)

0.886

Operative status

Elective/Urgent

197 (97.0%)

190 (93.6%)

0.100

Emergent

6 (3.0%)

13 (6.4%)

Preoperative myocardial infarction

<6 hrs

1 (0.5%)

0 (0.0%)

<24 hrs

10 (4.9%)

11 (5.4%)

0.930

1-7 days

171 (84.2%)

172 (84.7%)

8-21 days

22 (10.8%)

20 (9.9%)

Preoperative hemodynamic instability

9 (4.4%)

8 (3.9%)

0.804

Vessels diseased

Left circumflex artery

148 (72.9%)

148 (72.9%)

1.000

Right coronary artery

144 (70.9%)

157 (77.3%)

0.141

Left anterior descending

171 (84.2%)

170 (83.7%)

0.892

Left main coronary artery

65 (32.0%)

59 (29.1%)

0.518

Triple-vessel disease

104 (51.2%)

113 (55.7%)

0.371

Modified STS mortality risk

2.1% (1.1, 5.2)

1.9 (1.0, 4.1)

0.354

Modified STS morbidity/mortality risk

18.8% (10.7, 31.4)

18.1% (11.1, 27.2)

0.350