Baseline characteristics
| Characteristic | Value |
|---|---|
| Age (mean) (SD) (yr) | 55.6 (12.9) |
| Female (No.) (%) | 19 (63.3) |
| Hunt and Hess grade (No.) (%) | |
| 1 | 13 (43.3) |
| 2 | 4 (13.3) |
| 3 | 5 (16.7) |
| 4 | 6 (20.0) |
| 5 | 2 (6.7) |
| Fisher grade (No.) (%) | |
| 1 | 3 (10.0) |
| 2 | 14 (46.7) |
| 3 | 7 (23.3) |
| 4 | 6 (20.0) |
| Extraventricular drain (No.) (%) | |
| Before aneurysm treatment | 14 (46.7) |
| After aneurysm treatment | 0 (0) |
| None | 16 (53.3) |