Table 2. Aneurysm-specific and treatment-related factors.
| Characteristic | Total n = 268 | Retreatment n = 79 | No retreatment n = 189 | P value1 |
|---|---|---|---|---|
| Aneurysm-specific factors | ||||
|
| ||||
| Size | ||||
| >10 mm | 70 (26.1%) | 30 (38.0%) | 40 (21.2%) | <0.0005 |
| ≤10 mm | 198 (73.9%) | 49 (62.0%) | 149 (78.8%) | |
| Neck width | ||||
| >4 mm | 84 (31.3%) | 30 (38.0%) | 54 (28.6%) | 0.130 |
| ≤4 mm | 184 (68.7%) | 49 (62.0%) | 135 (71.4%) | |
| Dome-to-neck ratio | ||||
| >1.5 | 133 (49.6%) | 42 (53.2%) | 91 (48.1%) | 0.454 |
| ≤1.5 | 135 (50.4%) | 37 (46.8%) | 98 (51.9%) | |
| Ruptured | 102 (38.1%) | 51 (64.6%) | 51 (27.0%) | <0.0001 |
| Unruptured | 166 (61.9%) | 28 (35.4%) | 138 (73.0%) | |
| Location | ||||
| End-on | 118 (44.0%) | 37 (46.8%) | 81 (42.9%) | 0.550 |
| Sidewall | 150 (56.0%) | 42 (53.2%) | 108 (57.1%) | |
| Thrombus | 3 (1.1%) | 2 (2.5%) | 1 (0.5%) | 0.155 |
| No thrombus | 265 (98.9%) | 77 (97.5%) | 188 (99.5%) | |
| Treatment-related factors | ||||
|
| ||||
| Coils only | 147 (54.9%) | 61 (77.2%) | 86 (45.5%) | |
| Stent-assistance | 107 (39.9%) | 17 (21.5%) | 90 (47.6%) | <0.0001 |
| Flow diversion | 14 (5.2%) | 1 (1.3%) | 13 (6.9%) | |
| Initial treatment result | ||||
| Raymond Roy 1 | 126 (47.0%) | 22 (27.8%) | 104 (55.0%) | |
| Raymond Roy 2 | 132 (49.3%) | 52 (65.8%) | 80 (42.3%) | <0.0005 |
| Raymond Roy 3 | 10 (3.7%) | 5 (6.3%) | 5 (2.6%) | |
1
Variables were compared between retreatment and no retreatment groups by the Pearson chi-squared test.