Patient characteristics
| Characteristic | All patients (n=385) | Patients with AMI (n=82) | Patients without AMI (n=303) | p Value |
| Age in years, median (IQR) | 65 (56–76) | 67 (59–78) | 64 (55–75) | 0.084 |
| Male, n (%) | 233 (60.5) | 59 (72.0) | 174 (57.4) | 0.022 |
| Ethnicity, n (%) | ||||
| NZ European | 305 (79.2) | 61 (74.4) | 244 (80.5) | 0.223 |
| Other European | 50 (13.0) | 13 (15.9) | 37 (12.2) | 0.362 |
| Maori/Pacific Islander | 18 (4.7) | 7 (8.5) | 11 (3.6) | 0.076 |
| Other | 12 (3.1) | 1 (1.2) | 11 (3.6) | N/A |
| Prior IHD, n (%) | 201 (52.2) | 36 (43.9) | 165 (54.5) | 0.105 |
| Prior heart failure, n (%) | 45 (11.7) | 6 (7.3) | 39 (12.9) | 0.526 |
| Prior revascularization, n (%) | 126 (32.7) | 20 (24.4) | 106 (35.0) | 0.088 |
| Prior stroke, n (%) | 6 (1.6) | 0 | 6 (2.0) | 0.192 |
| Peripheral vascular disease, n (%) | 16 (4.2) | 3 (3.7) | 13 (4.3) | 0.808 |
| Hypertension, n (%) | 262 (68.1) | 59 (72.0) | 203 (67.0) | 0.160 |
| Dyslipidaemia, n (%) | 239 (62.1) | 48 (58.5) | 191 (63.0) | 0.799 |
| Smoking, n (%) | 239 (62.1) | 52 (63.4) | 187 (61.7) | 0.538 |
| Diabetes, n (%) | 58 (15.1) | 10 (12.2) | 48 (15.8) | 0.984 |
| Family history of IHD, n (%) | 254 (66.0) | 57 (69.5) | 197 (65.0) | 0.112 |
| Creatinine, μmol/l, median (IQR) | 89 (78–103) | 95 (84–117) | 88 (77–100) | 0.001 |
| Time to presentation, h, median (IQR) | 2.7 (2.0–3.3) | 2.8 (2.1–3.3) | 2.6 (2.0–3.3) | 0.213 |
AMI, acute myocardial infarction; IHD, ischaemic heart disease; NZ, New Zealand.