Table 1:
Patient and aneurysm characteristics associated with blebs.
| Characteristics | Values | Aneurysms with blebs | Aneurysms without blebs | p-value | Adjusted p-value |
|---|---|---|---|---|---|
| Patient characteristics | |||||
| Age | Mean ± SD | 56.7 ± 13.8 y | 57.2 ± 14.2 y | 0.50 | 1 |
| Sex | Female | 364 (35%) | 673 (65%) | 0.86 | 1 |
| Male | 141 (36%) | 255 (64%) | |||
| Unknown | 98 | 83 | |||
| Population | US | 451 (38%) | 741 (62%) | <0.01* | <0.01* |
| EU | 84 (43%) | 113 (57%) | |||
| SA | 2 (15%) | 11 (85%) | |||
| FIN | 30 (42%) | 41 (58%) | |||
| JAP | 36 (26%) | 105 (74%) | |||
| Aneurysm characteristics | |||||
| Rupture Status | Ruptured | 341 (53%) | 307 (47%) | <0.01* | <0.01* |
| Unruptured | 375 (22%) | 1304 (78%) | |||
| Unknown | 19 | 49 | |||
| Multiplicity | Multiple | 283 (23%) | 936 (77%) | <0.01* | <0.01* |
| Single | 452 (38%) | 724 (62%) | |||
| Morphology | Bifurcation | 603 (37%) | 1025 (63%) | <0.01* | <0.01* |
| Lateral | 132 (17%) | 635 (83%) | |||
| Location | ACA | 24 (29%) | 60 (71%) | <0.01* | <0.01* |
| ACOM | 175 (48%) | 192 (52%) | |||
| BA | 40 (31%) | 88 (69%) | |||
| ICA | 161 (18%) | 723 (82%) | |||
| MCA | 168 (32%) | 352 (68%) | |||
| PCOM | 164 (41%) | 239 (59%) | |||
| PICA | 3 (33%) | 6 (67%) | |||
ACA, anterior cerebral artery; ACOM, anterior communicating artery; BA, basilar artery; ICA, internal carotid artery; MCA, middle cerebral artery; PCOM, posterior communicating artery; PICA, posterior inferior cerebellar artery. The ‘Adjusted p-value’ column lists the p-values after adjustment for multiple testing using the Bonferroni method.