Aneurysm locations
| Location and sublocation (site reported) | % of participants (n/N) |
| Internal carotid artery | 28.1 (43/153) |
| Carotid cavernous | 2.0 (3/153) |
| Carotid ophthalmic | 5.9 (9/153) |
| Superior hypophyseal | 6.5 (10/153) |
| Posterior communication artery | 5.9 (9/153) |
| Anterior choroidal artery | 1.3 (2/153) |
| Internal carotid artery (supraclinoid) | 4.6 (7/153) |
| Carotid bifurcation | 2.0 (3/153) |
| Anterior cerebral artery | 37.3 (57/153) |
| Anterior communicating artery | 33.3 (51/153) |
| Pericallosal | 3.9 (6/153) |
| Middle cerebral artery | 11.1 (17/153) |
| Posterior cerebral artery | 3.9 (6/153) |
| Basilar artery | 17.6 (27/153) |
| Basilar tip | 17.0 (26/153) |
| Anterior inferior cerebellar artery | 0.0 (0/153) |
| Basilar trunk | 0.7 (1/153) |
| Superior cerebellar artery | 0.7 (1/153) |
| Vertebral artery | 1.3 (2/153) |
| Posterior inferior cerebellar artery | 0.7 (1/153) |
| VB junction | 0.7 (1/153) |