Patient and aneurysm characteristics for the randomized groups
| Characteristics | Randomization | |
|---|---|---|
| ASMO (n = 139) | FD (n = 139) | |
| Age (mean) (SD) | 57 (12) | 58 (12) |
| Female (No.) (%) | 108 (77.7%) | 110 (79.1%) |
| Presentation (No.) (%) | ||
| Asymptomatic | 72 (51.8%) | 78 (56.1%) |
| Mass effect | 41 (29.5%) | 40 (28.8%) |
| SAH | 26 (18.7%) | 21 (15.1%) |
| Aneurysm size (mm) | ||
| Mean (SD) | 13 (9) | 13 (10) |
| Median (range) | 10 (2–51) | 10 (1–56) |
| 0–9 (No.) (%) | 66 (47.5%) | 68 (48.9%) |
| 10–25 (No.) (%) | 59 (42.4%) | 54 (38.8%) |
| >25 (No.) (%) | 14 (10.1%) | 17 (12.2%) |
| Aneurysm neck (mm) | ||
| Mean (SD) | 5 (3) | 5 (3) |
| Median (min–max) | 5 (2–15) | 5 (1–16) |
| Undefined (No.) (%) | 22 (15.8%) | 21 (15.1%) |
| Location (No.) (%) | ||
| Anterior circulation | 108 (77.7%) | 109 (78.4%) |
| Proximal carotid | 71 (51.1%) | 74 (53.2%) |
| Extradural | 14 (10.1%) | 21 (15.1%) |
| Ophthalmic | 57 (41.0%) | 53 (38.1%) |
| Other carotid | 20 (14.4%) | 12 (8.6%) |
| Other anterior | 17 (12.2%) | 23 (16.5%) |
| Posterior circulation | 31 (22.3%) | 30 (21.6%) |
Note:—min indicates minimum; max. maximum.