Secondary outcomes (intent to treat)
| Clinical outcome | Surgical n=65 | Endovascular n=69 | p Value |
| Number of days hospitalised peritreatment, mean (median) (range) | 6.7 (5) (2–25) | 3.9 (1) (0–122) | <0.001 |
| Number of patients hospitalised for >5 days | 30 (46.2%) | 6 (8.7%) | <0.001 |
| Postoperative morbidity (mRS>2) | 3/65 (4.6%) | 3/69 (4.3%) | 1.0 |
| Patients with new neurological deficits following treatment | 16/65 (24.6%) | 7/69 (10.1%) | 0.038 |
| Discharge location | |||
| Home | 59 (91%) | 65 (94%) | 0.52 |
| Other hospital | 3 (4.6%) | 1 (1.4%) | |
| Rehabilitation centre | 2 (3.1%) | 2 (2.9%) | |
| Death | 1 (1.5%) | 1 (1.4%) | |
| Morbidity and mortality at 1 year (mRS>2) | 2/48 (4.2%) | 2/56 (3.6%) | 1.0 |
| Re-treatment of index aneurysm during follow-up | 1/65 (1.5%) | 2/69 (2.9%) | 1.0 |