Univariate analysis for rupture of small anterior communicating artery aneurysms
| Clinical variables | Ruptured | Unruptured | OR (95% CI) | p Value |
|---|---|---|---|---|
| N (M/F) | 278 (133/145) | 41 (23/18) | 1.4 (0.7 to 2.7) | 0.325 |
| Age (years) | 55.7±12.4 | 60.7±11.7 | 1.0 (0.9 to 1.0) | 0.017 |
| Aneurysm morphology | ||||
| Vessel size (mm) | 1.9±0.5 | 2.1±0.5 | 0.4 (0.2 to 0.8) | 0.005 |
| Aneurysm size (mm) | 3.6±1.1 | 2.9±1.2 | 1.8 (1.3 to 2.5) | <0.001 |
| Aneurysm height (mm) | 3.0±1.2 | 2.3±1.2 | 1.6 (1.2 to 2.3) | 0.002 |
| Perpendicular height (mm) | 2.6±1.1 | 2.1±1.2 | 1.5 (1.1 to 2.2) | 0.012 |
| Neck size (mm) | 2.5±0.8 | 2.4±0.9 | 1.2 (0.8 to 1.8) | 0.338 |
| Size ratio | 1.7±1.1 | 1.1±0.6 | 3.2 (1.8 to 5.8) | <0.001 |
| Aspect ratio | 1.1±0.7 | 0.9±0.5 | 1.9 (0.9 to 4.0) | 0.082 |
| Flow angle | 134.3±28.3 | 131.4±27.2 | 1.0 (0.9 to 1.1) | 0.258 |
| Vessel angle | 57.6±27.7 | 52.2±32.6 | 1.0 (0.9 to 1.1) | 0.553 |
| Aneurysm angle | 73.9±17.9 | 79.2±15.5 | 1.0 (0.9 to 1.1) | 0.076 |
| Aneurysm dome projection | 0.7 (0.4 to 1.4) | 0.325 | ||
| Anterior projection | 191 (68.7%) | 25 (61.0%) | ||
| Posterior projection | 87 (31.3%) | 16 (39.0%) | ||
| A1 segment configuration | 1.0 (0.7 to 1.6) | 0.007 | ||
| Symmetric | 90 (32.4%) | 19 (46.3%) | ||
| Dominant | 133 (47.8%) | 9 (22.0%) | ||
| Complete | 55 (19.8%) | 13 (31.7%) | ||
| Aneurysm lobulations | 3.3 (0.9 to 12.3) | 0.142 | ||
| Regular | 234 (84.2%) | 39 (95.1%) | ||
| Irregular | 32 (11.2%) | 2 (4.9%) | ||
| Daughter sac | 13 (4.6%) | 0 | ||
| Multi aneurysms | 39 (14.0%) | 4 (9.8%) | 1.0 (0.8 to 1.3) | 0.995 |