Outcomes by rupture status
| Outcome | Ruptured Group Event Rate (%) (95% CI) | Raw Proportion | Unruptured Group Event Rate (%) (95% CI) | Raw Proportion | P Value |
|---|---|---|---|---|---|
| Initial adequate occlusion | 100 (57–100) | 4/4 | 70 (44–91) | 49/73 | .24 |
| Midterm complete occlusion | 45 (25–65) | 18/35 | 22 (11–33) | 22/89 | .008 |
| Midterm adequate occlusion | 85 (67–98) | 33/44 | 84 (72–94) | 76/118 | .89 |
| Intraoperative rupture | 6 (0–11) | 4/79 | 1 (0–3) | 3/220 | .08 |
| Perioperative morbidity | 2 (0–26)a | 14/70 | 2 (0–6) | 5/145 | .35 |
| Perioperative mortality | 15 (7–23) | 11/69 | 0 (0–3) | 0/122 | <.0001 |
| Thromboembolic complication | 21 (0–56)a | 10/79 | 5 (2–10) | 17/220 | .07 |
| Retreatment | 4 (0–20) | 7/66 | 7 (0–25)a | 17/171 | .71 |
| Treatment failure | 0 (0–3.9) | 0/79 | 6 (3–9) | 18/274 | .04 |
| Midterm good neurologic outcome | 100 (97–100) | 36/39 | 99 (94–100) | 80/82 | .21 |
↵a Indicates I2 value above 50% (substantial heterogeneity).