Patient data
| Characteristic | Value |
|---|---|
| Sex | |
| Male | 33 |
| Female | 50 |
| Age, y | |
| Mean | 56.1 |
| Range | 27–88 |
| Hunt-Hess grade at admission | |
| I | 33 |
| II | 14 |
| III | 20 |
| IV | 12 |
| V | 3 |
| Mean | 2.2 |
| Clinical follow-up, mo | |
| Mean | 16.8 |
| Range | 0.25–112 |
| Mean in survivors | 19.1 |
| Range in survivors | 0.5–112 |
| Patients with angiographic follow-up | 68 |
| Angiographic follow-up, mo | |
| Mean | 11.6 |
| Range | 0.2–70 |