Baseline characteristics of patients with AF-bAVMs
| Variables | Overall (n=135) |
| Demographic variables | |
| Age (mean±SD, years) | 28.1±12.3 |
| Male, no (%) | 90 (66.7) |
| LD history, no (%) | 19 (14.1) |
| Angioarchitectural variables | |
| Size (mean±SD, mm) | 35.9±14.4 |
| Haemorrhage, no (%) | 69 (51.1) |
| Deep perforating artery feeding bAVM, no (%)* | |
| AChA | 11 (8.1) |
| PChA | 7 (5.2) |
| LLSA | 17 (12.6) |
| DV drainage, no (%) | 12 (8.9) |
| Diffuse nidus, no (%) | 28 (20.7) |
| S-M grading (mean±SD) | 2.5±0.8 |
| AF segment involved, no (%)† | |
| I | 51 (37.8) |
| II | 19 (14.1) |
| III | 61 (45.2) |
| IV | 25 (18.5) |
*bAVMs supplied by more than one deep perforating artery were counted repeatedly.
†bAVMs involving more than one AF segment were counted repeatedly.
AChA, anterior choroidal artery; AF, arcuate fasciculus; bAVMs, brain arteriovenous malformations; DV, deep venous; LD, language deficit; LLSA, lateral lenticulostriate artery; PChA, posterior choroidal artery; S-M, Spetzler-Martin.