Univariate analysis showing the association between findings on HC and the clinical-anatomic-demographic variables of patients treated by TVE
Variable | Were There HC? | ||
---|---|---|---|
No (n = 49) | Yes (n = 8) | P | |
Spetzler-Martin grading system | 1.0a | ||
I, II, and III | 39 (68.5%) | 7 | |
IV and V | 10 (17.5%) | 1 | |
Previous rupture | 1.0a | ||
No | 16 | 3 | |
Yes | 33 | 5 | |
Sex | .70a | ||
Female | 25 | 3 | |
Male | 24 | 5 | |
Mean age on admission (SD) (yr) | 37.1 (18.6) | 46.8 (13.6) | .16b |
No. of venous collectors (mean) (SD) | 1.2 (0.45) | 2.0 (0.75) | .003c |
Presence of dilated draining vein (No.) (%) | .06a | ||
Evaluator 1 = 24/57 | 18 (31.5%) | 6 (10.5%) | |
Presence of dilated draining vein (No.) (%) | .14a | ||
Evaluator 2 = 28/57 | 22 (38.5%) | 6 (10.5%) | |
Presence of dilated draining vein (No.) (%) | .69a | ||
Evaluator 3 = 36/57 | 30 (52.6%) | 6 (10.5%) | |
Pattern of venous drainage | .48a | ||
Superficial | 21 | 4 | |
Deep | 25 | 3 | |
Superficial and deep | 3 | 1 | |
Nidus diameter before any intervention | .01b | ||
(mean) (SD) (cm) | 2.74 (1.19) | 3.88 (1.40) | |
Nidus diameter before TVE (mean) (SD) (cm) | 2.28 (0.92) | 3.37 (1.00) | .003b |
Nidus diameter before TVE (2 groups) | .03a | ||
0–3 cm | 38 | 3 | |
>3 cm | 11 | 5 | |
AVM location | .09a | ||
Cortical (lobar or cerebellum) | 33 | 8 | |
Deep (brain stem, thalamus, or basal ganglia) | 16 | 0 |