Baseline patient and aneurysm characteristicsa
| WEB 17 (n = 38) | pWEB (n = 70) | P Value | Adjusted P Value | |
|---|---|---|---|---|
| Patient age (yr) | 55.7 ± 12.7 | 57.3 ± 12.2 | .54 | .72 |
| Female sex | 25 (65.8%) | 52 (74.3%) | .35 | .61 |
| Rupturedaneurysms | 10 (26.3%) | 24 (34.3%) | .39 | .59 |
| WFNS I | 2 (5.3%) | 10 (14.3%) | .82 | .06 |
| WFNS II | 2 (5.3%) | 3 (4.3%) | ||
| WFNS III | 2 (5.3%) | 4 (5.7%) | ||
| WFNS IV | 1 (2.6%) | 2 (2.9%) | ||
| WFNS V | 3 (7.9%) | 5 (7.1%) | ||
| Fisher 1 | 1 (2.6%) | 2 (2.9%) | .77 | .30 |
| Fisher 2 | 0 (0%) | 2 (2.9%) | ||
| Fisher 3 | 3 (7.9%) | 5 (7.1%) | ||
| Fisher 4 | 6 (15.8%) | 13 (18.6%) | ||
| Aneurysm location | ||||
| AcomA | 14 (36.8%) | 15 (21.4%) | .08 | .92 |
| Pericallosal | 0 (0%) | 1 (1.4%) | 1.0 | .24 |
| MCA | 4 (10.5%) | 15 (21.4%) | .19 | .60 |
| ICA | ||||
| Paraophthalmic | 1 (2.6%) | 7 (10.0%) | .26 | .06 |
| PcomA | 4 (10.5%) | 5 (7.1%) | .72 | .55 |
| Terminus | 3 (7.9%) | 0 (0%) | .04 | .25 |
| BA | 9 (23.7%) | 24 (34.3%) | .25 | .82 |
| SUCA | 1 (2.6%) | 0 (0%) | .35 | .01 |
| PICA | 2 (5.3%) | 3 (4.3%) | 1.0 | .53 |
| Anterior circulation | 26 (68.4%) | 43 (61.4%) | .47 | .63 |
| Posteriorcirculation | 12 (31.6%) | 27 (38.6%) | ||
| Bifurcation location | 27 (71.1%) | 54 (77.1%) | .49 | .72 |
| Aneurysmsize(mm) | 4.9 ± 1.5 | 5.6 ± 1.4 | .007 | .55 |
| Neck width (mm) | 3.6 ± 1.1 | 4.2 ± 1.3 | .04 | .95 |
| D/N ratio | 1.4 ± 0.5 | 1.4 ± 0.4 | .56 | .90 |
| Wide neck | 35 (92.1%) | 65 (92.9%) | 1.0 | .66 |
Note:—WFNS indicates World Federation of Neurosurgical Societies grading scale; D/N ratio, dome-to-neck ratio; PcomA, posterior communicating artery; BA, basilar apex; SUCA, superior cerebellar artery.
↵a Data are number and percentage of means.