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Table 1: Patient demographics in our cohort of pediatric bAVMs (N = 39)^{^a}
Demographics 
Age (mean) (range) (yr) 10.8 ± 3.9, 2–17
Male/female ratio 19/20
Presentation 
    Hemorrhage 28 (71.2)
    Seizures 5 (12.8)
    HHT screening 3 (7.7)
    Incidental (screening for headache) 2 (5.1)
    Partially treated at outside institution 1 (2.6)
SM grade 
    I 10 (26)
    II 24 (61.5)
    III 4 (10.3)
    IV 1 (2.6)
Location 
    Frontal 5 (12.8)
    Parietal 9 (23.1)
    Temporal 11 (28.2)
    Occipital 9 (23.1)
    Brain stem 1 (2.6)
    Cerebellar 3 (7.7)
    Choroidal 1 (2.6)
Arterial feeder type 
    Terminal 19 (48.7)
    En passant 20 (51.3)
Venous drainage 
    Superficial only 31 (79.5)
    Deep (±superficial drainage) 8 (20.5)
Venous stenosis 
    Present 3 (7.7)
    Absent 36 (92.3)
Compactness 
    Compact 30 (76.9)
    Diffuse 9 (23.1)
Treatment 
    Surgery 20 (51.3)
    Embolization 11 (28.2)
    Radiosurgery 3 (7.7)
    Multimodality 5 (12.8)
Note:—HHT indicates hereditary hemorrhagic telengiectasia.
↵a Data are numbers (%) unless otherwise indicated.