Table 1. Baseline characteristics, by final diagnosis.
| Baseline characteristic | Final diagnosis | |
|---|---|---|
| STEMI N =221635 | NSTEMI N = 342777 | |
| Age in years, median (IQR) | 64.5 (55.0, 74.8) | 72.5 (61.5, 81.1) |
| Men (%) | 159923 (72.2) | 216937 (63.3) |
| Medical history | ||
| CABG (%) | 5022 (2.5) | 25714 (8.0) |
| Congestive heart failure (%) | 3407 (1.7) | 22019 (6.9) |
| Diabetes (%) | 27703 (13.4) | 75244 (22.6) |
| Hypertension (%) | 84252 (41.8) | 173629 (53.1) |
| Hyperlipidaemia (%) | 58512 (30.1) | 112416 (35.3) |
| Previous MI (%) | 25703 (12.7) | 88156 (26.9) |
| PCI (%) | 11599 (5.9) | 30607 (9.5) |
| Prior or current smoking (%) | 137983 (68.2) | 196493 (61.5) |
| AMI severity variables | ||
| Serum creatinine (μmol/l)* | 87.0 (74.0, 103.0) | 92.0 (76.0, 114.0) |
| Heart rate (beats/min) | 75.0 (64.0, 89.0) | 80.0 (67.0, 94.0) |
| Systolic BP (mm Hg) | 135.0 (118.0, 154.0) | 141.0 (123.0, 160.0) |
| Cardiac arrest (%) | 15000 (7.2) | 5351 (1.6) |
| Cardiac enzyme positive (%) | 190013 (96.0) | 314310 (95.3) |
| ST segment depression (%) | 4058 (1.9) | 82478 (26.0) |
| Length of hospital stay in days^ | 4 (2, 7) | 6 (4, 11) |
| Initial diagnosis | ||
| STEM I (%) | 176269 (79.5) | 6764 (2.0) |
| NSTEMI (%) | 31436 (14.2) | 219568 (64.1) |
| Chest pain of uncertain cause (%) | 6519 (2.9) | 55241 (16.1) |
| Other initial diagnosis (%) | 7411 (3.3) | 61204 (17.9) |
Continuous variables are presented with median (IQR);
Categorical variables are presented with count (%);
*
μmol/l can be converted into mg/dl by dividing 88.4
^
Length of hospital stay rounded to nearest single day