Table 1.
Demographic and clinical characteristics
| Overall | Stable CAD | ACS | p Value* | |
|---|---|---|---|---|
| Characteristics | (n=3041) | (n=542) | (n=2499) | |
| Demographics (%) | ||||
| Age±mean, SD | 63.5±12.4 | 66.3±10.9 | 62.8±12.6 | <0.001 |
| Female | 876 (28.8%) | 154 (28.4%) | 722 (28.9%) | 0.824 |
| Cardiac risk factors (%) | ||||
| Hypertension | 1812 (59.6%) | 396 (73.1%) | 1416 (56.7%) | <0.001 |
| Diabetes | 755 (24.8%) | 164 (30.3%) | 591 (23.6%) | 0.001 |
| Hyperlipidaemia | 1677 (55.1%) | 407 (75.1%) | 1270 (50.8%) | <0.001 |
| Current smoker | 878 (28.9%) | 72 (13.3%) | 806 (32.3%) | <0.001 |
| Former smoker | 769 (25.3%) | 190 (35.1%) | 579 (23.2%) | <0.001 |
| Clinical characteristics 2 weeks prior to procedure (%) | ||||
| Heart failure | 560 (18.4%) | 152 (28.0%) | 408 (16.3%) | <0.001 |
| CCS class for angina | ||||
| Class 0 | 484 (15.9%) | 57 (10.5%) | 427 (17.1%) | <0.001 |
| Class I | 116 (3.8%) | 98 (18.1%) | 18 (0.7%) | |
| Class II | 410 (13.5%) | 216 (39.9%) | 194 (7.8%) | |
| Class III | 671 (22.1%) | 151 (27.9%) | 520 (20.8%) | |
| Class IV | 1310 (43.1%) | 8 (1.5%) | 1302 (52.1%) | |
| Medical and cardiac history (%) | ||||
| Heart failure | 99 (3.3%) | 21 (3.9%) | 78 (3.1%) | 0.37 |
| Myocardial infarction | 471 (15.5%) | 83 (15.3%) | 388 (15.5%) | 0.901 |
| Coronary artery bypass grafting surgery | 255 (8.4%) | 71 (13.1%) | 184 (7.4%) | <0.001 |
| Cerebrovascular disease | 191 (6.3%) | 33 (6.1%) | 158 (6.3%) | 0.839 |
| Peripheral vascular disease | 175 (5.8%) | 42 (7.7%) | 133 (5.3%) | 0.028 |
| Chronic obstructive pulmonary disease | 204 (6.7%) | 29 (5.4%) | 175 (7.0%) | 0.163 |
| Chronic renal disease | 103 (3.4%) | 21 (3.9%) | 82 (3.3%) | 0.489 |
| Cancer | 213 (7.0%) | 35 (6.5%) | 178 (7.1%) | 0.582 |
*p Value compares characteristics between patients with stable CAD and ACS.
ACS, acute coronary syndrome; CAD, coronary artery disease; CCS, Canadian Cardiovascular Society.