Table 1 Baseline clinical characteristics and risk factors
Variable | SSlow ≤ 8 (177) | 8 < SSmid < 18 (177) | 18 ≤ SShigh (193) | Total | p value |
|---|---|---|---|---|---|
Baseline characteristics | |||||
Male sex | 108 (61.0%) | 123 (69.5%) | 142 (73.6%) | 373 (68.2%) | 0.031 |
Age (years) | 65.11 ± 4.00 | 68.20 ± 8.19 | 66.92 ± 3.00 | 66.82 ± 3.50 | 0.045 |
Body mass index (kg/m2) | 24.26 ± 3.07 | 23.52 ± 2.98 | 23.97 ± 3.12 | 23.67 ± 2.12 | 0.211 |
Risk factors | |||||
Left ventricular ejection fraction | 67.17 ± 10.38 | 69.74 ± 8.66 | 65.71 ± 9.68 | 67.71 ± 7.63 | < 0.001 |
Creatinine clearance, ml/1.73 m2 | 64.41 ± 37.32 | 57.41 ± 25.14 | 56.53 ± 26.87 | 58.53 ± 16.65 | 0.06 |
Creatinine > 100 μmol/l | 33 (18.6%) | 44 (24.9%) | 66 (34.2%) | 144 (26.3) | 0.003 |
Hypertension | 125 (70.6%) | 116 (65.5%) | 127 (65.8%) | 370 (67.6%) | 0.513 |
Diabetes mellitus | 48 (27.1%) | 59 (33.3%) | 52 (26.9%) | 159 (29.1%) | 0.315 |
Hypercholesterolemia | 67 (37.9%) | 73 (41.2%) | 82 (42.5%) | 222 (40.6%) | 0.648 |
Current smoker | 71 (40.1%) | 60 (33.9%) | 89 (46.1%) | 220 (40.2%) | 0.057 |
Stroke | 24 (13.6%) | 13 (7.3%) | 20 (10.4%) | 57 (10.4%) | 0.16 |
Chronic pulmonary disease | 17 (9.6%) | 21 (11.9%) | 24 (12.4%) | 62 (11.3%) | 0.667 |
Previous MI | 9 (5.1%) | 15 (8.5%) | 8 (4.1%) | 32 (5.9%) | 0.181 |
Previous PCI | 6 (3.4%) | 11 (6.2%) | 3 (2.6%) | 20 (3.6%) | 0.182 |
SS | 4.81 ± 2.21 | 12.86 ± 2.66 | 26.07 ± 6.83 | 14.90 ± 8.83 | < 0.0001 |
Indication for treatment | |||||
Stable angina | 60 (33.9%) | 76 (42.9%) | 69 (35.8%) | 205 (37.4%) | 0.177 |
Unstable angina | 53 (29.9%) | 41 (23.2%) | 57 (29.5%) | 151 (27.6%) | 0.174 |
ST-segment elevation MI | 27 (15.3%) | 26 (14.7%) | 34 (17.6%) | 87 (15.9%) | 0.714 |
Non-ST-segment elevation MI | 15 (8.5%) | 14 (7.9%) | 7 (3.6%) | 36 (6.6%) | 0.118 |
Silent ischemia | 22 (12.4%) | 19 (10.7%) | 27 (14.0%) | 27 (12.4%) | 0.638 |
Medication at discharge | |||||
Aspirin | 144 (81.4%) | 141 (80.1%) | 172 (89.1%) | 457 (83.5%) | 0.038 |
Clopidogrel | 139 (78.5%) | 149 (84.2%) | 164 (85.0%) | 452 (82.6%) | 0.211 |
β-Blocker | 88 (49.7%) | 93 (52.5%) | 90 (46.6%) | 90 (49.5%) | 0.524 |
Statin | 139 (78.5%) | 146 (82.5%) | 165 (85.5%) | 271 (85.5%) | 0.215 |
ACEI/ARB | 82 (46.3%) | 92 (52.0%) | 82 (42.5%) | 256 (46.8%) | 0.186 |