Table 1. baseline characteristics.
| Variables | Study population | No graft failure | Graft failure | P |
|---|---|---|---|---|
| Female (n, %) | 29 (25.44) | 11 (23.40) | 18 (26.87) | 0.676 |
| Age (years) | 61.82±8.53 | 63.60±9.12 | 60.58±7.92 | 0.063 |
| Smoking (n, %) | 65 (57.02) | 26 (55.32) | 39 (58.21) | 0.759 |
| Diabetes (n, %) | 46 (40.35) | 19 (40.43) | 27 (40.30) | 0.989 |
| Hypertension (n, %) | 74 (64.91) | 32 (68.09) | 42 (62.69) | 0.552 |
| Hyperlipemia (n, %) | 81 (71.05) | 32 (68.09) | 49 (73.13) | 0.558 |
| Chronic renal insufficiency (n, %) | 2 (1.75) | 2 (4.26) | 0 (0) | 0.328 |
| PVD (n, %) | 5 (4.39) | 1 (2.13) | 4 (5.97) | 0.602 |
| Previous cerebrovascular accidents (n, %) | 13 (11.40) | 7 (14.89) | 6 (8.96) | 0.326 |
| Previous MI (n, %) | 30 (26.32) | 14 (29.79) | 16 (23.88) | 0.481 |
| Previous PCI (n, %) | 19 (16.67) | 7 (14.89) | 12 (17.91) | 0.671 |
| Number of grafts | 2.83±0.69 | 2.77±0.87 | 2.88±0.54 | 0.472 |
| Follow time (month) | 24.89±6.91 | 25.45±7.25 | 27.91±8.42 | 0.385 |
*, continuous variables with normal distribution are presented as mean ± SD unless otherwise noted. PVD, peripheral vascular disease; MI, myocardial infarction; PCI, percutaneous coronary intervention