Table 1 Characteristics of the study participants
From: Differentially hypomethylated cell-free DNA and coronary collateral circulation
| Â | Total | Good CCC | Poor CCC | Â |
|---|---|---|---|---|
| Â | (n = Â 143) | (n = Â Â 109) | (n = Â Â 34) | p |
Age, years | 57.8 ± 10.6 | 57.0 ± 11.2 | 59.7 ± 9.9 | 0.25 |
Male | 102 (71.3) | 78 (71.6) | 24 (70.6) | >0.99 |
Risk factors | ||||
Hypertension | 68 (47.6) | 54 (49.5) | 14 (41.2) | 0.44 |
Diabetes mellitus | 34 (23.8) | 26 (23.9) | 8 (23.5) | >0.99 |
Smoking | 19 (13.3) | 13 (11.9) | 6 (17.6) | 0.39 |
Hypercholesterolemia | 11 (7.7) | 8 (7.3) | 3 (8.8) | 0.72 |
Acute coronary syndrome | 89 (62.2) | 65 (59.6) | 24 (70.6) | 0.31 |
Body mass index, kg/\(m^2\) | 25.2 ± 3.0 | 25.3 ± 3.1 | 24.6 ± 3.0 | 0.31 |
Number of diseased vessels | ||||
 1 | 49 (34.3) | 38 (34.9) | 11 (32.4) |  |
 2 | 30 (21.0) | 24 (22.0) | 6 (17.6) | 0.82 |
 3 | 64 (44.8) | 46 (42.2) | 17 (50.0) |  |