Factors | Aneurysm groups | p Value | |
Unruptured | Ruptured | ||
Demographic data | |||
Patients No | 123 | 167 | |
Age (yr, mean (SD)) | 57.9 (10.1) | 53.5 (13.1) | 0.854 |
Gender | |||
Men | 43 (35.0%) | 57 (34.1%) | 0.645 |
Women | 80 (65.0%) | 110 (65.9%) | |
Hypertension | |||
63 (51.2%) | 59 (35.3%) | 0.009 | |
60 (48.8%) | 108 (64.7%) | ||
Family history | |||
32 (26.0%) | 10 (6.0%) | <0.001 | |
91 (74.0%) | 157 (94.0%) | ||
Smoking | |||
33 (26.8%) | 38 (22.8%) | 0.662 | |
90 (73.2%) | 129 (77.2%) | ||
Angiographic data | |||
No of aneurysm | 123 | 167 | |
Location | |||
ACoA | 26 (18.8%) | 71 (42.6%) | <0.001 |
ACA | 8 (5.8%) | 6 (3.6%) | 0.471 |
PCoA | 17 (12.3%) | 28 (16.8%) | 0.331 |
ICA | 29 (21.0%) | 24 (14.4%) | 0.132 |
MCA | 41 (29.7%) | 34 (20.4%) | 0.063 |
V-B | 15 (10.9%) | 3 (1.8%) | 0.001 |
PCA | 2 (1.5%) | 1 (0.6%) | 0.591 |
Size (mm) | |||
Nmax | 3.8 (2.0) | 2.9 (1.2) | 0.000 |
Dmax | 5.9 (3.4) | 5.4 (3.7) | 0.312 |
Depth | 5.9 (3.2) | 6.6 (4.4) | 0.114 |
Bottleneck factor | 1.6 (0.9) | 1.9 (0.7) | 0.024 |
Aspect ratio | 1.7 (1.0) | 2.3 (1.0) | <0.001 |
Shape | |||
Saccular | |||
Lobulated | 23 (16.7%) | 45 (27.0%) | 0.038 |
Beehive | 13 (9.4%) | 29 (17.4%) | 0.047 |
Spherical | 49 (35.5%) | 35 (21.0%) | 0.007 |
Ellipse | 12 (8.7%) | 40 (23.4%) | <0.001 |
Pear | 26 (18.8%) | 18 (10.8%) | 0.051 |
Fusiform | 15 (10.9%) | 0 | <0.001 |
ACA, anterior cerebral artery; ACoA, anterior communicating artery; Aspect ratio, Depth/Nmax; Bottleneck factor, Dmax/Nmax; Dmax, maximum diameter of aneurysmal dome; ICA, distal internal carotid artery except PCoA; MCA, middle cerebral artery; Nmax, maximum diameter of aneurysmal neck; PCA, posterior cerebral artery; PCoA, posterior communicating artery; V-B, vertebrobasilar artery.