Table 1. Results from the univariable analysis of influential factors for IA rupture.
| Factors | Unruptured group (n=598) | Ruptured group (n=616) | χ2 | P value |
|---|---|---|---|---|
| Age (years) | 57.28±9.63 | 57.47±12.00 | 0.293 | 0.769 |
| Gender | 1.641 | 0.200 | ||
| Male | 218 (36.5) | 203 (33.0) | ||
| Female | 380 (63.5) | 413 (67.0) | ||
| Single/multiple | 2.033 | 0.154 | ||
| Single | 503 (84.1) | 499 (81.0) | ||
| Multiple | 95 (15.9) | 117 (19.0) | ||
| Hypertension | 3.327 | 0.068 | ||
| Yes | 354 (59.2) | 396 (64.3) | ||
| No | 244 (40.8) | 220 (35.7) | ||
| Diabetes | 0.132 | 0.716 | ||
| Yes | 60 (10.0) | 58 (9.4) | ||
| No | 538 (90.0) | 558 (90.6) | ||
| Cerebral infarction | 14.629 | <0.001 | ||
| Yes | 67 (11.2) | 32 (5.2) | ||
| No | 531 (88.8) | 584 (94.8) | ||
| Heart disease | 1.720 | 0.190 | ||
| Yes | 68 (11.4) | 56 (9.1) | ||
| No | 530 (88.6) | 560 (90.9) | ||
| Immune system disorders | 1.720 | 0.190 | ||
| Yes | 1 (0.2) | 4 (0.6) | ||
| No | 597 (99.8) | 612 (99.4) | ||
| Metabolic disease | 0.867 | 0.352 | ||
| Yes | 13 (2.2) | 9 (1.5) | ||
| No | 585 (97.8) | 607 (98.5) | ||
| Denial of illness | 0.044 | 0.834 | ||
| Yes | 157 (26.3) | 165 (26.8) | ||
| No | 441 (73.7) | 451 (73.2) | ||
| ICA | 105.447 | <0.001 | ||
| Yes | 233 (39.0) | 81 (13.1) | ||
| No | 365 (61.0) | 535 (86.9) | ||
| MCA | 0.042 | 0.838 | ||
| Yes | 60 (10.0) | 64 (10.4) | ||
| No | 538 (90.0) | 552 (89.6) | ||
| ACA | 3.686 | 0.055 | ||
| Yes | 15 (2.5) | 28 (4.5) | ||
| No | 583 (97.5) | 588 (95.5) | ||
| AcoA | 42.145 | <0.001 | ||
| Yes | 39 (6.5) | 117 (19.0) | ||
| No | 559 (93.5) | 499 (81.0) | ||
| PcoA | 47.199 | <0.001 | ||
| Yes | 162 (27.1) | 284 (46.1) | ||
| No | 436 (72.9) | 332 (53.9) | ||
| Branch A | 5.303 | 0.021 | ||
| Yes | 7 (1.2) | 19 (3.1) | ||
| No | 591 (98.8) | 597 (96.9) | ||
| VA | 5.148 | 0.023 | ||
| Yes | 37 (6.2) | 21 (3.4) | ||
| No | 561 (93.8) | 595 (96.6) | ||
| BA | 0.108 | 0.743 | ||
| Yes | 54 (9.0) | 59 (9.6) | ||
| No | 544 (91.0) | 557 (90.4) | ||
| PCA | 0.756 | 0.385 | ||
| Yes | 15 (2.5) | 11 (1.8) | ||
| No | 583 (97.5) | 605 (98.2) | ||
| Branch P | 5.303 | 0.021 | ||
| Yes | 7 (1.2) | 19 (3.1) | ||
| No | 591 (98.8) | 597 (96.9) |
Data are presented as number (percentage) or mean ± standard deviation. IA, intracranial aneurysm; ICA, internal carotid artery; MCA, middle cerebral artery; ACA, anterior cerebral artery; AcoA, anterior communicating artery; PcoA, posterior communicating artery; Branch A, anterior circulation branches; VA, vertebral artery; BA, basilar artery; PCA, posterior cerebral artery; Branch P, posterior circulation branches; single, solitary aneurysm; multiple, multiple aneurysms.