Primary outcome
| Intent-to-treat analysis | Surgical | Endovascular | |
| 1-year outcome | n=48 | n=56 | OR |
| Treatment failure (composite) | 5 | 10 | 0.54 (0.13, 1.90), p=0.40 |
| Failure to treat aneurysm with allocated modality | 1 | 3 | 0.38 (0.01, 4.91), p=0.62 |
| Intracranial haemorrhage during first-year FU | 1 | 1 | 1.17 (0.01, 93.44), p=1.00 |
| Saccular residual aneurysm | 3 | 6 | 0.56 (0.09, 2.80), p=0.51 |