Age, yr, median (IQR) | 65 (56–76) | 71 (60–79) | 77 (69–83) | 61 (53–72) |
Sex, male | 561 (59.7) | 168 (68.3) | 72 (64.9) | 321 (55.2) |
Ethnic background |
NZ European† | 743 (79.1) | 195 (79.3) | 99 (89.2) | 449 (77.1) |
Other European | 92 (9.8) | 24 (9.8) | 8 (7.2) | 60 (10.3) |
Maori/Pacific Islander | 36 (3.8) | 12 (4.9) | 2 (1.8) | 22 (3.8) |
Other | 68 (7.2) | 15 (6.1) | 2 (1.8) | 51 (8.8) |
History of ischemic heart disease | 486 (51.8) | 125 (50.8) | 86 (77.5) | 275 (47.3) |
Prior revascularization | 284 (30.2) | 75 (30.5) | 46 (41.4) | 163 (28.0) |
Current smoker | 569 (60.6) | 146 (59.3) | 74 (66.7) | 349 (60.0) |
Hypertension | 571 (60.8) | 162 (65.9) | 79 (71.2) | 330 (56.7) |
Diabetes mellitus | 155 (16.5) | 54 (22.0) | 24 (21.6) | 77 (13.2) |
Dyslipidemia | 541 (57.6) | 141 (57.3) | 68 (61.3) | 332 (57.0) |
Peripheral vascular disease | 48 (5.1) | 12 (4.9) | 15 (13.5) | 21 (3.6) |
Family history of ischemic heart disease | 564 (60.1) | 145 (58.9) | 59 (53.2) | 360 (61.9) |
Body mass index, median (IQR) | 28 (25–31) | 27 (24–31) | 27 (24–30) | 28 (25–31) |
Creatinine level, mmol/L, median (IQR) | 97 (88–115) | 97 (80–115) | 97 (80–124) | 80 (71–97) |
Time to presentation, h, median (IQR) | 6.3 (3.3–13.3) | 6.1 (3.3–14.9) | 5.9 (3.5–10.0) | 6.4 (3.3–13.4) |
Ischemic changes on ECG | 234 (24.9) | 127 (51.6) | 21 (18.9) | 86 (14.8) |
In-patient revascularization | 163 (17.4) | 113 (45.9) | 3 (2.7) | 47 (8.1) |