Table 1.
Baseline Patient Characteristics
| Number of All Patients | BI ≤60 | BI >60 | P value | |
|---|---|---|---|---|
| n = 688 | n = 102 | n = 586 | ||
| Men (%) | 399 (58) | 51 (50) | 348 (59.4) | 0.076 |
| Women (%) | 289 (42) | 51 (50) | 238 (40.6) | |
| Age | 76.29±7.42 | 80.45±7.45 | 75.57±7.18 | 0.097 |
| Years of CAD | 3.24±6.71 | 3.65±7.76 | 3.17±6.52 | 0.101 |
| Past AMI (%) | 99 (14.4) | 18 (17.6) | 81 (13.8) | 0.310 |
| Past CABG (%) | 19 (2.8) | 4 (3.9) | 15 (2.6) | 0.439 |
| Hypertension (%) | 506 (73.5) | 71 (69.6) | 435 (74.2) | 0.328 |
| Years of Hypertension | 12.94±13.13 | 13.98±14.54 | 12.76±12.87 | 0.038 |
| Diabetes (%) | 269 (39.1) | 45 (44.1) | 224 (38.2) | 0.260 |
| Years of diabetes | 5.24±8.74 | 7.20±11.25 | 4.90±8.19 | <0.001 |
| Heart failure (%) | 17 (2.5) | 10 (9.8) | 7 (1.2) | <0.001 |
| Smoking (%) | 167 (24.3) | 12 (11.8) | 155 (26.5) | 0.005 |
| Drinking (%) | 172 (25.1) | 16 (15.8) | 156 (26.7) | 0.073 |
| Family history of CAD (%) | 134 (19.5) | 11 (10.8) | 123 (21.0) | 0.016 |
| Length of hospitalization (days) | 9.83±9.41 | 10.88±10.36 | 9.64±9.23 | 0.001 |
| Type of AMI (%) | 0.846 | |||
| -STEMI | 269 (39.1) | 39 (38.2) | 230 (39.2) | |
| -NSTEMI | 419 (60.9) | 63 (61.8) | 356 (60.8) | |
| Killip class (%) | <0.001 | |||
| 1 | 394 (57.3) | 25 (24.5) | 369 (63.0) | |
| 2 | 214 (31.1) | 35 (34.3) | 179 (30.5) | |
| 3 | 38 (5.5) | 8 (7.8) | 30 (5.1) | |
| 4 | 42 (6.1) | 34 (33.3) | 8 (1.4) | |
| TC | 4.17±1.95 | 3.78±1.04 | 4.22±1.09 | 0.765 |
| TG | 1.39±0.92 | 1.22±0.53 | 1.42±0.97 | 0.025 |
| HDL-C | 1.07±0.26 | 1.05±0.26 | 1.08±0.26 | 0.822 |
| LDL-C | 2.34±0.78 | 2.07±0.77 | 2.38±0.78 | 0.901 |
| GRACE score | 159.02±31.06 | 191.58±32.85 | 153.35±27.01 | 0.004 |
| Charlson Comorbidity Index | 5.99±1.99 | 6.21±2.10 | 5.95±1.97 | 0.234 |
| Revascularization (%) | 430 (66.2) | 26 (40.6) | 404 (68.9) | <0.001 |
Abbreviations: CAD, coronary artery disease; AMI, acute myocardial infarction; CABG, coronary artery bypass grafting; STEMI, ST elevated myocardial infarction; NSTEMI, non-ST elevated myocardial infarction; TC, total cholesterol; TG, triglycerides; HDL-C, high density lipoprotein cholesterol; LDL-C, low density lipoprotein cholesterol; GRACE, Global Registry of Acute Coronary Events; revascularization, treated with PCI during hospitalization.