Major comorbidities
| All | Young (<65 years) | Elderly (65–74 years) | Very elderly (≥75 years) | p-value | |
| Patients | 248 (100) | 101 (40.7) | 82 (33.1) | 65 (26.2) | |
| Coronary artery disease | 46 (18.5) | 13 (12.9) | 22 (26.8) | 11 (16.9) | 0.050 |
| Arrhythmias | 34 (13.7) | 4 (4.0) | 14 (17.1) | 16 (24.6) | <0.001 |
| Thromboembolic disease | 33 (13.3) | 13 (12.9) | 13 (15.9) | 7 (10.8) | |
| Obstructive lung disease | 49 (19.8) | 15 (14.9) | 23 (28) | 11 (16.9) | 0.657 |
| Smoking | 135 (54.4) | 60 (44.4) | 48 (35.6) | 27 (20.0) | 0.053 |
| Hypertension | 117 (47.2) | 30 (29.7) | 47 (57.3) | 40 (61.5) | <0.001 |
| Dyslipidaemia | 52 (21.0) | 10 (9.9) | 25 (30.5) | 17 (26.2) | 0.002 |
| Diabetes | 51 (20.6) | 14 (13.9) | 24 (29.3) | 13 (20.0) | 0.037 |
| Peripheral vascular disease | 24 (9.7) | 2 (2.0) | 10 (12.2) | 12 (18.5) | 0.001 |
| Stroke | 10 (4.0) | 2 (2.0) | 3 (3.7) | 5 (7.7) | 0.190 |
| Cognitive disorder | 6 (2.4) | 4 (4.0) | 0 | 2 (3.1) | 0.177 |
| Charlson Comorbidity Index score | 4±2.1 | 2±1.8 | 4±1.5 | 5±1.7 | <0.001 |
Data are presented as n (%) or median±sd, unless otherwise stated.