Characteristics of participants
| Data are mean (SD) or number (%). | |
| CABG, coronary artery bypass grafting; GRACE, Global Registry of Acute Coronary Events; NSTEMI, non-ST elevation myocardial infarction; PTCA, percutaneous transluminal coronary angioplasty; STEMI, ST elevation myocardial infarction; UA, unstable angina. | |
| Men/women | 231/64 |
| Age (years) | 60.4 (11.6) |
| Ethnicity: white | 245 (83.1%) |
| Marital status: married | 191 (64.7%) |
| Educational qualifications | |
| None | 139 (47.1%) |
| Primary | 66 (22.4%) |
| Secondary | 90 (30.5%) |
| Paid employment | 158 (53.7%) |
| Deprivation index | |
| Low | 132 (44.7%) |
| Medium | 77 (26.1%) |
| High | 86 (29.2%) |
| Body mass index (kg/m2) | 27.1 (4.5) |
| Smoking status | |
| Never | 65 (22.0%) |
| Former smoker | 108 (36.6%) |
| Current smoker | 122 (41.4%) |
| Alcohol drinkers | 188 (63.9%) |
| Physical activity | |
| None | 182 (62.1%) |
| Low | 60 (20.5%) |
| >2 times/week | 51 (17.4%) |
| Diabetes | 39 (13.2%) |
| Hypertension | 131 (44.4%) |
| Previous myocardial infarction | 32 (10.8%) |
| Preadmission β blockers | 52 (17.7%) |
| Preadmission statins | 43 (14.6%) |
| Preadmission aspirin | 61 (20.7%) |
| Time of onset | |
| 00 00–06 00 | 62 (21.0%) |
| 06 00–12 00 | 96 (32.5%) |
| 12 00–18 00 | 84 (28.5%) |
| 18 00–24 00 | 53 (18.0%) |
| Woke up with symptoms | 29 (9.8%) |
| Day of week | |
| Weekday | 197 (66.8%) |
| Weekend | 98 (33.2%) |
| Premonitory symptoms (4 days) | 134 (45.4%) |
| Acute coronary syndrome type | |
| STEMI | 200 (67.8%) |
| NSTEMI/UA | 95 (32.3%) |
| ST segment depression | 36 (12.2%) |
| Q wave | 131 (50.2%) |
| Non-Q wave | 130 (49.8%) |
| No of vessels diseased | 1.78 (0.8) |
| Heart failure | 23 (7.8%) |
| Arrhythmia | 25 (8.5%) |
| Troponin T (μg/l) (n = 253) | 4.03 (5.7) |
| Creatine kinase (U/l) (n = 233) | 1286.3 (1395) |
| Treatment | |
| Medical | 80 (28.7%) |
| PTCA | 159 (57.0%) |
| CABG | 40 (14.3%) |
| GRACE risk score | 93.0 (27.1) |