Baseline characteristics
| Characteristic | Invasive strategy (n=220) |
| Age in years, mean (range) | 84.7 (80–93) |
| Male, n (%) | 122 (55) |
| Medical history, n (%) | |
| Previous myocardial infarction | 103 (47) |
| Previous angina | 122 (55) |
| Previous PCI | 53 (24) |
| Previous CABG | 42 (19) |
| Hypertension | 127 (58) |
| Type 2 diabetes | 45 (20) |
| Chronic obstructive pulmonary disease | 23 (10) |
| Apoplexia cerebri | 38 (17) |
| Peripheral vascular disease | 19 (9) |
| Atrial fibrillation | 47 (21) |
| Smoking status, n (%) | |
| Current | 17 (8) |
| Previous | 93 (42) |
| EF, n (%) | |
| EF <30% | 11 (5) |
| EF 30%–50% | 60 (27) |
| EF >50% | 103 (47) |
| ECG at admission, n (%) | |
| Atrial fibrillation | 49 (22) |
| Pathological Q-wave | 35 (16) |
| ST depression | 40 (18) |
| Negative T-wave | 31 (14) |
| Right bundle branch block | 21 (10) |
| Left bundle branch block | 21 (10) |
| Troponin elevation* | 210 (95) |
| Creatinine, μmol/L | 102.4 |
Values are mean±SD unless otherwise indicated.
*Troponin levels exceeding the 99th percentile of a normal population.
CABG, coronary artery bypass graft; EF, left ventricular ejection fraction; PCI, percutaneous coronary intervention.