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Table 1: Baseline characteristics of the 21 patients in this study
Variable Value
Age (yr) 
    Mean 29.9
    Median 29
    Range 8–59
    SD 17.0
Sex (No.) (%) 
    Male 14 (66.7)
    Female 7 (33.3)
mRS before embolization (No.) (%) 
    0–2 12 (57.1)
    3–5 9 (42.9)
Location (No.) (%) 
    Deep 18 (85.7)
    Superficial 3 (14.3)
Size (No.) (%) 
    ≤3 cm 12 (57.1)
    >3 cm 9 (42.9)
Eloquent (No.) (%) 
    Yes 15 (71.4)
    No 6 (28.6)
Venous pattern (No.) (%) 
    Superficial 11 (52.4)
    Deep 9 (42.9)
    Deep (main) + superficial 1 (4.8)
No. of veins (%) 
    Single 20 (95.2)
    Multiple 1 (4.8)
Angioarchitecture (No.) (%) 
    Aneurysms in the feeding artery or intranidus 9 (42.9)
    Venous stenosis 4 (19.0)
    Localized venous ectasia 2 (9.5)
Spetzler-Martin grade (No.) (%) 
    I 3 (14.3)
    II 4 (19.0)
    III 11 (52.4)
    IV 3 (14.3)
    V 0 (0)

Variable	Value
Age (yr)
Mean	29.9
Median	29
Range	8–59
SD	17.0
Sex (No.) (%)
Male	14 (66.7)
Female	7 (33.3)
mRS before embolization (No.) (%)
0–2	12 (57.1)
3–5	9 (42.9)
Location (No.) (%)
Deep	18 (85.7)
Superficial	3 (14.3)
Size (No.) (%)
≤3 cm	12 (57.1)
>3 cm	9 (42.9)
Eloquent (No.) (%)
Yes	15 (71.4)
No	6 (28.6)
Venous pattern (No.) (%)
Superficial	11 (52.4)
Deep	9 (42.9)
Deep (main) + superficial	1 (4.8)
No. of veins (%)
Single	20 (95.2)
Multiple	1 (4.8)
Angioarchitecture (No.) (%)
Aneurysms in the feeding artery or intranidus	9 (42.9)
Venous stenosis	4 (19.0)
Localized venous ectasia	2 (9.5)
Spetzler-Martin grade (No.) (%)
I	3 (14.3)
II	4 (19.0)
III	11 (52.4)
IV	3 (14.3)
V	0 (0)