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Table 2 Relative locations and morphologic factors

From: Influence of morphology and hemodynamic factors on rupture of multiple intracranial aneurysms: matched-pairs of ruptured-unruptured aneurysms located unilaterally on the anterior circulation

Variables Aneurysms p value ‡ (2-tailed)
Total (n = 40) Ruptured group (n = 20) Unruptured group (n = 20)
Relative location     
Distal (%) 20 (50) 11 (55) 9 (45) 0.824
Proximal (%) 20 (50) 9 (45) 11 (55)  
Morphology type     
Lateral (%) 15 (37.5) 6 (30) 9 (45) 0.581
Bifurcation (%) 25 (62.5) 14 (70) 11 (55)  
Regular 22 (55) 5 (25) 17 (85) 0.002
Irregular 18 (45) 15 (75) 3 (15)  
Maximum height, mm 3.94 (1.977) 4.68 (1.605) 3.20 (2.076) 0.041
Neck width, mm 3.58 (1.308) 3.77 (1.468) 3.39 (1.131) 0.351
Surface area, mm2 32.20 (38.809) 42.82 (41.895) 27.14 (15.980) 0.062
Volume,mm3 20.85 (41.064) 31.18 (43.944) 16.08 (14.697) 0.108
Aspect ratio 1.11 (0.399) 1.31 (0.402) 0.92 (0.290) 0.004
  1. The comparisons of maximum height and aspect ratio between the two groups were of significant differences (p < 0.05). (‡, McNemar’s test, paired-sample t test or Wilcoxon’s sign rank test as appropriate).