Microsurgery clinical outcome of low-grade arteriovenous malformations
| Variable | Unruptured | Ruptured | P value* |
| No. of patients | 105 | 113 | |
| Post-resection angiographic outcome (%) | 0.99 | ||
| Complete | 105 (100) | 113 (100) | |
| Residual | 0 | 0 | |
| No follow-up | 0 | 0 | |
| Follow-up (months), mean±SD) | 53.3±51.9 | 57.0±56.0 | 0.61 |
| Number of patients lost to clinical follow-up | 3 | 6 | |
| Functional outcome (mRS) on follow-up | 0.026 | ||
| 0–2 | 101 | 100 | |
| 3 | 0 | 4 | |
| 4 | 1 | 2 | |
| 5 | 0 | 0 | |
| 6 | 0 | 1 | |
| Clinical deficits | 0.77 | ||
| Transient | 8 | 5 | |
| Permanent | 1 | 1 | |
*Statistical significance defined as p<0.05.