Summary of outcomes
| Outcome | Event Rate (%) (95% CI) | Raw Proportion |
|---|---|---|
| Initial complete occlusion | 27 (15–39)a | 76/277 |
| Initial adequate occlusion | 59 (39–78)a | 132/277 |
| Midterm complete occlusion | 39 (26–52)a | 168/362 |
| Midterm adequate occlusion | 85 (78–91) | 209/261 |
| Midterm good neurologic outcome | 96 (94–98) | 328/346 |
| Intraoperative rupture | 1 (0–2) | 12/556 |
| Perioperative morbidity | 4 (1–8)a | 29/449 |
| Perioperative mortality | 1 (0–2) | 13/517 |
| Thromboembolic complication | 8 (5–12) | 56/556 |
| Retreatment | 6 (1–12)a | 37/501 |
| Treatment failure | 3 (1–6) | 27/543 |
↵a Indicates I2 value above 50% (substantial heterogeneity).