Baseline factors relating to delay in coming into hospital
| Delay (hours) | |||||
|---|---|---|---|---|---|
| ⩽ 1 | > 1, ⩽ 2 | > 2, ⩽ 4 | > 4, ⩽ 12 | > 12 | |
| No of cases (%) | 309 (15) | 555 (27) | 504 (25) | 387 (19) | 292 (14) |
| Age (years) (SD) | 60 (10) | 62 (10) | 63 (9) | 63 (9) | 63 (9)*** |
| Female (%) | 20 | 26 | 28 | 30 | 27 |
| Cardiac failure within 48 h of admission (%) | 28 | 30 | 33 | 30 | 383-151 |
| ST elevation in diagnostic ECG (%) | 76 | 68 | 62 | 57 | 49*** |
| Thrombolytic treatment (%) | 70 | 67 | 60 | 48 | 15*** |
| 30 day fatality (%) | 11.7 | 8.8 | 12.7 | 15.2 | 22.63-151 |
↵3-151 p < 0.01 v ⩽ 1 h; ***p < 0.001 for trend.