Table 1.
Baseline Characteristics
| Dual Antiplatelet Therapy | P Value | ||
|---|---|---|---|
| 3 mo (n=481) | 12 mo (n=491) | ||
| Age, y | 65.1±10.7 | 65.3±10.3 | 0.71 |
| Male | 347 (72.1) | 360 (73.3) | 0.68 |
| Diabetes mellitus | 194 (40.3) | 190 (38.7) | 0.60 |
| Hypertension | 294 (61.1) | 314 (64.0) | 0.36 |
| Dyslipidemia | 211 (43.9) | 218 (44.4) | 0.87 |
| Current smoking | 121 (25.2) | 116 (23.6) | 0.58 |
| Previous myocardial infarction | 26 (5.4) | 25 (5.1) | 0.83 |
| Previous coronary artery bypass graft surgery | 6 (1.3) | 5 (1.0) | 0.74 |
| Previous revascularization | 58 (12.1) | 67 (13.7) | 0.46 |
| Chronic renal failure | 15 (3.1) | 16 (3.3) | 0.90 |
| Left ventricular ejection fraction (%) | 60.0±10.6 | 59.8±11.1 | 0.80 |
| Clinical presentation | 0.38 | ||
| Stable angina | 227 (47.2) | 229 (46.6) | |
| Unstable angina | 126 (26.2) | 150 (30.6) | |
| Non–ST‐segment elevation myocardial infarction | 86 (17.9) | 76 (15.5) | |
| ST‐segment elevation myocardial infarction | 42 (8.7) | 36 (7.3) | |
| Multiple‐vessel disease | 233 (48.4) | 233 (47.5) | 0.76 |
| Location of lesion treated | |||
| Left main | 5 (1.0) | 8 (1.6) | 0.42 |
| Left anterior descending artery | 295 (61.3) | 295 (60.1) | 0.69 |
| Left circumflex | 128 (26.6) | 129 (26.3) | 0.90 |
| Right coronary artery | 176 (36.6) | 171 (34.8) | 0.57 |
| Lesion complexity | |||
| Calcified lesion | 89 (18.5) | 90 (18.3) | 0.94 |
| Bifurcation lesion | 60 (12.5) | 61 (12.4) | 0.98 |
| Thrombotic lesion | 34 (7.1) | 33 (6.7) | 0.83 |
| Use of intravascular ultrasound | 91 (18.9) | 110 (22.4) | 0.18 |
| Treated lesions per patient | 1.4±0.7 | 1.3±0.6 | 0.14 |
| Multilesion intervention | 150 (31.2) | 143 (29.1) | 0.48 |
| Multivessel intervention | 114 (23.7) | 111 (22.6) | 0.69 |
| Number of stents per patient | 1.5±0.8 | 1.4±0.7 | 0.12 |
| Mean stent diameter per patient, mm | 3.0±0.4 | 3.0±0.4 | 0.91 |
| Total stent length per patient, mm | 38.5±22.8 | 35.9±21.1 | 0.07 |
Data are n (%) or means±SD.