Multivariate analysis
| Variable | OR (95% CI) | P Value |
|---|---|---|
| Male | 1.21 (0.51–2.85) | .6636 |
| HTN | 2.01 (0.99–4.08) | .0533 |
| ACA vs ICA | 4.47 (0.58–34.44) | .1502 |
| BAS vs ICA | 1.12 (0.31–4.04) | .8584 |
| MCA vs ICA | 2.79 (0.91–8.60) | .0734 |
| Other artery vs ICA | 0.53 (0.03–9.04) | .6596 |
| PcomA vs ICA | 0.84 (0.15–4.53) | .8351 |
| Vertebral artery vs ICA | 1.27 (0.27–6.09) | .7620 |
| Dissecting vs saccular | 0.83 (0.19–3.63) | .8089 |
| Fusiform vs saccular | 2.74 (1.11–6.75) | .0283 |
| Other aneurysm type vs saccular | 1.71 (0.44–6.66) | .4370 |
| Aneurysm size | 1.03 (0.99–1.07) | .1370 |
| PED No. | 1.17 (0.94–1.45) | .1610 |
Note:—HTN indicates hypertension; ACA, anterior cerebral artery; BAS, basilar artery; PcomA, posterior communicating artery.