Patient characteristics
| Characteristic | Score | Surgical group | Endovascular group |
|---|---|---|---|
| WFNS = World Federation of Neurological Surgeons; ACoA = anterior communicating artery; MCA = middle cerebral artery; PCoA = posterior communicating artery; ICA = internal carotid artery; N/A = not available (matching variables: grade on admission, age, location of aneurysm). | |||
| Number of patients | — | 40 | 40 |
| Sex, F:M | — | 27:13 | 29:11 |
| Mean age, y | — | 49.8 | 51.9 |
| Grade on admission (WFNS) | 1 | 24 | 23 |
| 2 | 7 | 8 | |
| 3 | 5 | 5 | |
| 4 | 4 | 4 | |
| Fisher grade on CT | 1 | 4 | 3 |
| 2 | 8 | 8 | |
| 3 | 8 | 9 | |
| 4 | 20 | 16 | |
| N/A | 0 | 4 | |
| Location of aneurysm | ACoA | 17 | 17 |
| R MCA | 6 | 6 | |
| L MCA | 4 | 4 | |
| R PCoA | 9 | 9 | |
| L PCoA | 3 | 2 | |
| L ICA | 1 | 2 | |
| Glasgow Outcome Score | 1 | 26 | 26 |
| 2 | 10 | 11 | |
| 3 | 4 | 3 | |
| Time to operation, h | — | 275 | 113 |