Baseline patient characteristics and lesion details (total patients, n= 269)
| Variable | |
| Age, years (median, IQR) | 73 (65, 82) |
| Female, n (%) | 69 (25.7) |
| Hypertension, n (%) | 203 (75.5) |
| Hyperlipemia, n (%) | 123 (45.7) |
| Diabetes, n (%) | 86 (32) |
| Alcohol abuse, n (%) | 35 (13) |
| Coagulopathy, n (%) | 67 (24.9) |
| Liver Cirrhosis | 25 (9.3) |
| Anti-platelet medicine use, n (%) | 93 (34.6) |
| Anti-coagulation medicine use, n (%) | 79 (29.4) |
| Baseline mRS (median, IQR)) | 2 (1,3) |
| Traumatic SDH, n (%) | 151 (56.1) |
| Prior surgery, n (%) | |
| Yes | 124 (46.1) |
| No | 95 (35.3) |
| Unknown | 50 (18.6) |
| Type of prior surgery, n (%) | |
| Burr Holes | 38 (30.6) |
| Craniotomy | 49 (39.5) |
| Craniectomy | 1 (0.8) |
| SEPS | 36 (29) |
| Median hematoma thickness, mm (median, IQR) | 13.0 (8.0, 18.9) |
| Midline shift, n (%) | 174 (64.7) |
| Midline shift, mm (median, IQR)) | 3.45 (0, 6) |
| Side, n (%) | |
| Bilateral | 107 (39.8) |
| Left | 87 (32.3) |
| Right | 75 (27.9) |