Table 5 Baseline characteristics and collateral formation

Demographics

 Age (years), mean ± SD

61.38 ± 11.86

61.20 ± 11.28

0.95

 Male

67 (65.7 %)

15 (75.0 %)

0.42

 Black

11 (10.8 %)

0 (0.0 %)

0.12

Blood pressure (mmHg), mean ± SD

 Systolic

129.77 ± 23.44

119.15 ± 18.88

0.06

 Diastolic

70.40 ± 13.88

69.20 ± 10.13

0.72

Medical History

 Acute coronary syndrome on presentation

34 (33.3 %)

9 (45.0 %)

0.32

 Prior myocardial infarction

26 (25.5 %)

10 (50.0 %)

0.03

 Hypertension

78 (76.5 %)

17 (85.0 %)

0.41

 Diabetes

38 (37.3 %)

8 (40.0 %)

0.82

 Chronic dialysis

8 (7.8 %)

0 (0.0 %)

0.20

 Congestive heart failure

26 (25.5 %)

6 (30.0 %)

0.68

 Chronic obstructive lung disease

8 (7.8 %)

0 (0.0 %)

0.20

 Peripheral vascular disease

6 (5.9 %)

4 (20.0 %)

0.04

 Hyperlipidemia

75 (73.5 %)

16 (80.0 %)

0.54

Angiographic Findings

 Number of diseased vessels, median [IQR]

1.0 [0.0, 1.0]

2.0 [1.0, 2.5]

<0.001

 Multi-vessel coronary disease

20 (19.6 %)

14 (70.0 %)

<0.001

 Gensini score, median [IQR]

22.25 [19.50, 30.50]

66.50 [56.25, 92.00]

<0.001

 Percent area stenosis (%), median [IQR]

4.7 [3.6, 6.1]

0.7 [5.0,9.0]

<0.001

Labs, mean ± SD

 Ejection fraction (%), median [IQR]

57.5 [45.0, 65.0]

55.0 [38.0, 64.0]

0.53

 Hemoglobin, (g/dL)

13.25 ± 1.82

12.76 ± 2.01

0.28

 White blood count (1000/mm³), median [IQR]

7.66 [6.13, 8.93]

8.17 [6.96, 9.40]

0.22

 LDL cholesterol (mg/dL)

88.55 ± 33.58

79.75 ± 45.45

0.34

 Serum creatinine (mg/dL), median [IQR]

1.05 [0.83, 1.30]

1.05 [0.89, 1.41]

0.61

 Estimated glomerular filtration rate, (mL/min)

68.15 ± 30.43

69.28 ± 31.03

0.88