| Variable | Value (%) |
| Medical history |
|
| Diabetes | 4 (8.2) |
| Hypertension | 9 (18.4) |
| Heart disease | 5 (10.2) |
| Association of comorbidities | 8 (16.3) |
| Pulmonary embolism | 1 (2) |
| Neoplasm | 1 (2) |
| Anticoagulation therapy | 9 (18.4) |
| Clinical findings |
|
| Markwalder I | 10 (20.4) |
| Markwalder II | 3 (6.1) |
| Markwalder III | 28 (57.1) |
| Markwalder IV | 8 (16.9) |
| Past history of head trauma | 14 (28.6) |
| CT scan findings |
|
| Unilateral | 40 (81.6) |
| Midline shift | 38 (77.6) |
| False membrane | 17 (34.7) |
| Aspect of blood on CT scan |
|
| Chronic | 20 (40.8) |
| Mixed densities | 17 (34.7) |
| Subacute | 12 (24.5) |