Analysis of rupture odds ratio by location subgroups according to anterior angles above or below the median and their respective 95% CIs
| Location/Angle | Unruptured (%) | Ruptured (%) | P Value | OR (95% CI) |
|---|---|---|---|---|
| Supraclinoid | .091 | 1.75 (0.91–3.36) | ||
| ≤15.40° | 71 (74.74) | 24 (25.26) | ||
| >15.40° | 49 (62.82) | 29 (37.18) | ||
| MCA | .354 | 1.32 (0.73–2.40) | ||
| ≤15.40° | 83 (77.57) | 24 (22.43) | ||
| >15.40° | 94 (72.31) | 36 (27.69) | ||
| AcomA | .049 | 1.84 (1.00–3.38) | ||
| ≤15.40° | 45 (55.56) | 36 (59.55) | ||
| >15.40° | 36 (40.45) | 53 (59.55) | ||
| Bifurcation | .470 | 1.90 (0.43–8.48) | ||
| ≤15.40° | 14 (77.78) | 4 (22.22) | ||
| >15.40° | 11 (64.71) | 6 (35.29) |
Note:—Supraclinoid indicates supraclinoid segments, including the ophthalmic, posterior communicating, and anterior choroidal segments; Bifurcation, internal carotid artery bifurcation; AcomA, anterior communicating artery.