Table 1. Baseline demographic characteristics and implantation conditions associated with stent fracture.
| Characteristic | Fx+ (n = 509) | Fx− (n = 506) | p value |
|---|---|---|---|
| Demographics | |||
| Age, mean ± SE | 61.4 ± 0.74 | 66.7 ± 0.77 | <0.001 |
| Women [n (%)] | 80 (23.7%) | 81 (28.8%) | 0.17 |
| Stent dimensions, mean ± SE | |||
| Stent diameter, mm | 3.0 ± 0.02 | 2.9 ± 0.02 | <0.001 |
| Stent length, mm | 24.2 ± 0.36 | 19.5 ± 0.31 | <0.001 |
| Stents implanted, mean ± SE | 2.0 ± 0.06 | 1.1 ± 0.04 | <0.001 |
| Stents in vessel [n (%)] | |||
| 1 | 255 (50.3%) | 331 (67.4%) | <0.001 |
| > 1 | 252 (49.7%) | 68 (13.8%) | <0.001 |
| Overlapped stents [n (%)]* | 176 (69.8%) | 11 (16.2%) | <0.001 |
| Stent-in-stent [n (%)]* | 35 (13.9%) | 10 (14.7%) | 0.71 |
| Vessels stented, mean ± SE | 1.2 ± 0.02 | 0.9 ± 0.02 | <0.001 |
| Target vessel [n (%)] | |||
| RCA | 263 (52.2%) | 125 (28.4%) | <0.001 |
| LAD | 150 (29.8%) | 143 (32.5%) | 0.40 |
| LCX | 34 (6.7%) | 80 (18.2%) | <0.001 |
| LM | 4 (0.8%) | 13 (3.0%) | 0.01 |
| Diagonal (LAD) | 7 (1.4%) | 19 (4.3%) | 0.008 |
| Marginal (LCX) | 8 (1.6%) | 24 (5.5%) | 0.002 |
| Other | 38 (7.5%) | 36 (8.2%) | 0.72 |
Values are mean ± SE or n(%). Fx+ = Patients with adverse events and stent fracture, Fx− = Patients with adverse events not including stent fracture.
a
Overlapped and stent-in-stent values reported as a percentage of those reports where multiple stents were employed. LAD Left coronary artery, LCX left circumflex, LM left marginal, RCA right coronary artery.