Baseline patient and aneurysm characteristics
| Characteristic | |
| Demographics (n=141) | |
| Age (years) (mean±SD) | 54.6±11.3 |
| Women (n (%)) | 124 (87.9) |
| Baseline mRS (mean±SD (range)) | 0.2±0.5 (0–2) |
| Baseline NIHSS (mean±SD (range)) | 0.1±0.6 (0–4) |
| Medical history (n=141) (n (%)) | |
| Hypertension | 72 (51.1) |
| Hyperlipidemia | 54 (38.3) |
| Diabetes mellitus | 16 (11.3) |
| Obesity | 24 (17.0) |
| Cerebral atherosclerosis | 1 (0.7) |
| Atrial fibrillation | 7 (5.0) |
| Myocardial infarction | 2 (1.4) |
| Coronary artery disease | 9 (6.4) |
| Sleep apnea | 16 (11.3) |
| Alcohol use | 3 (2.1) |
| Smoking history (n (%)) | |
| Never smoked, or has not smoked within 10 years | 79 (56.0) |
| Not a current smoker, but has smoked within 10 years | 21 (14.9) |
| Current smoker, <1 pack/day | 27 (19.1) |
| Current smoker, ≥1 pack/day | 14 (9.9) |
| Aneurysms characteristics (median (mean±SD)) | |
| Aneurysm size (mm) | 4.6 (5.0±1.9) |
| Neck width (mm) | 3.7 (4.0±1.4) |
| Dome to neck ratio | 1.1 (1.1±0.3) |
| Aneurysm location (n/N (%)) | |
| ICA | 134/141 (95.0) |
| ICA–petrous segment (C2) | 1/134 (0.7) |
| ICA–clinoid segment (C4) | 11/134 (8.2) |
| ICA–cavernous segment (C5) | 3/134 (2.2) |
| ICA–ophthalmic segment (C6) | 100/134 (74.6) |
| ICA–PCom segment (C7) | 19/134 (14.2) |
| Vertebral artery | 7/141 (5) |
ICA, internal carotid artery; mRS, modified Rankin Scale; NIHSS, National Institute of Health Stroke Scale; PCom, posterior communicating artery.