Outcomes based on hospital volume
| Hospital Volume (Cases/Year) | Clipping | Coiling | ||
|---|---|---|---|---|
| Death (No.) (%)a | Discharge to Long-Term Facility (No.) (%)b | Death (No.) (%)c | Discharge to Long-Term Facility (No.) (%)d | |
| ≤5 | 22 (1.8) | 237 (19.2) | 5 (1.0) | 37 (7.4) |
| 6–20 | 21 (1.1) | 274 (13.8) | 15 (0.9) | 86 (5.3) |
| 21–44 | 7 (0.7) | 108 (11.4) | 13 (0.9) | 69 (4.7) |
| ≥45 | 13 (1.2) | 116 (11.1) | 10 (0.5) | 78 (4.3) |
a P = .14.
b P < .0001.
c P = .54.
d P = .03.