The 6-month, 1-year and 5-year cumulative risks (CRs) of de novo epilepsy after endovascular treatment of an intracranial aneurysm
| Endovascular treatment | Total no. of patients | Patients with epilepsy | CR* 6 months, % (95% CI) | CR* 1 year, % (95% CI) | CR* 5 years, % (95% CI) |
| Aneurysm, ruptured | 885 | 62 | 2.9 (2.0 to 4.3) | 4.1 (3.0 to 5.6) | 6.7 (5.2 to 8.6) |
| Aneurysm, non-ruptured | 599 | 35 | 3.7 (2.4 to 5.5) | 3.8 (2.6 to 5.7) | 5.6 (4.0 to 8.0) |
*Cumulative risks are the summation of patients alive with epilepsy and deceased with epilepsy.