Preoperative hematoma size, postoperative hematoma size, change in hematoma size (mean±SD), and radiographic outcomes of chronic subdural hematoma procedures by depth of embolization.
| Anterior and posterior (n=29) | Anterior or posterior only (n=12) | P value | |
| Preoperative hematoma size (cm) | 15.2±3.6 | 14.5±4.7 | 0.61 |
| Postoperative hematoma size (cm) | 1.9±3.1 | 3.5±4.0 | 0.17 |
| Change in hematoma size (cm) | 13.3±4.9 | 11.0±4.8 | 0.17 |
| No. (%) of procedures with complete resolution | 22 (76) | 4 (33) | 0.01 |
| No. (%) of procedures with treatment failure | 0 (0) | 1 (8) | 0.12 |