Patient baseline characteristics according to aneurysm presentation
| Unruptured group (n=103) | Ruptured group (n=60) | Total (n=163) | |
| Patient baseline characteristics | |||
| Age (years), mean±SD (range) | 59.14±10.1 (32–80) | 56.25±11.0 (30–75) | 58.1±10.5 (30–80) |
| Women, n (%) | 73 (70.9%) | 38 (63.3%) | 111 (68.1%) |
| Smoking | 49 (47.6%) | 26 (43.3%) | 75 (46.0%) |
| Current | 12 (24.5%) | 4 (15.4%) | 16 (21.3%) |
| Past | 37 (75.5%) | 22 (84.6%) | 59 (78.7%) |
| Main medical history | |||
| Systemic hypertension | 53 (51.5%) | 30 (50.0%) | 83 (50.9%) |
| Hyperlipidemia | 20 (19.4%) | 7 (11.7%) | 27 (16.6%) |
| Diabetes mellitus | 9 (8.7%) | 2 (3.3%) | 11 (6.7%) |
| mRS score | |||
| 0 | 83 (80.6%) | ||
| 1 | 17 (16.5%) | ||
| 2 | 1 (1.0%) | ||
| 3 | 2 (1.9%) | ||
| Hunt and Hess score | |||
| I | 16 (26.7%) | ||
| II | 32 (53.3%) | ||
| III | 12 (20.0%) | ||
| Aneurysm baseline characteristics and procedural information | |||
| Aneurysm, maximum sac width (mm) | |||
| Mean±SD | 5.1±1.3 | 4.8±1.7 | 5.0±1.4 |
| Range | 2.5–8.9 | 2.0–9.2 | 2.0–9.2 |
| Aneurysm maximum neck size (mm) | |||
| Mean±SD | 3.6±0.9 | 3.3±0.9 | 3.5±0.9 |
| Range | 1.8–6.7 | 1.5–5.7 | 1.5–6.7 |
| Dome to neck ratio | |||
| <2 | 99 (96.1%) | 57 (95.0%) | 156 (95.7%) |
| >2 | 4 (3.9%) | 3 (5.0%) | 7 (4.3%) |
| Aneurysm location | |||
| ACom complex | 32 (31.1%) | 29 (48.3%) | 61 (37.4%) |
| MCA bifurcation | 37 (35.9%) | 12 (20.0%) | 49 (30.1%) |
| PCom | 5 (4.9%) | 12 (20.0%) | 17 (10.4%) |
| Basilar apex | 11 (10.7%) | 3 (5.0%) | 14 (8.6%) |
| Pericallosal artery/ACA | 6 (5.9%) | 1 (1.7%) | 7 (4.3%) |
| ICA terminus | 5 (4.9%) | 1 (1.7%) | 6 (3.7%) |
| Other | 7 (6.8%) | 2 (3.3%) | 9 (5.5%) |
| MCA M1* | 3 (2.9%) | 0 (0.0%) | 3 (1.8%) |
| PICA | 1 (1.0%) | 1 (1.7%) | 2 (1.2%) |
| Posterior cerebral artery | 1 (1.0%) | 0 (0.0%) | 1 (0.6%) |
| Basilar trunk | 1 (1.0%) | 0 (0.0%) | 1 (0.6%) |
| Carotid ophthalmic artery* | 1 (1.0%) | 0 (0.0%) | 1 (0.6%) |
| Superior cerebellar artery* | 0 (0.0%) | 1 (1.7%) | 1 (0.6%) |
*Aneurysms located on MCA M1, carotid ophthalmic artery and superior cerebellar artery were classified as bifurcation at a branch, instead of usual bifurcation definition.
ACA, anterior cerebral artery; ACom, anterior communicating artery; ICA, internal carotid artery; MCA, middle cerebral artery; mRS, modified Rankin Scale; PCom, posterior communicating artery; PICA, posterior inferior cerebellar artery.