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Table 1: 
Location and angioarchitecture characteristics of developmental venous anomalies
Total(n = 58)Complicated DVA(n = 21) (36.2%)Uncomplicated DVA (n = 37) (63.2%)P Valuea
Location (%).44
 Frontal24 (41.4)9 (42.9)15 (40.5)
 Parieto-occipital16 (27.7)6 (28.6)10 (27)
 Temporal8 (13.8)3 (14.3)5 (13.5)
 Basal ganglia/thalami5 (8.6)0 (0)5 (13.5)
 Brain stem2 (3.4)1 (4.8)1 (2.7)
 Cerebellum3 (5.2)2 (9.5)1 (2.7)
Infratentorial (%)5 (8.6)3 (14.3)2 (5.4).34
Right side (%)33 (56.9)13 (61.9)20 (54.1).59
Multiple collectors (%)9 (15.5)7 (33.3)2 (5.4).008b
Main collector caliber (median) (IQR) (mm)1.6 (1.18–2.10)2.1 (1.95–2.30)1.2 (1–1.6)<.001b
Drainage (%).70
 Deep31 (53.4)11 (52.4)20 (54.1)
 Superficial19 (32.8)6 (28.6)13 (35.1)
 Both8 (13.8)4 (19)4 (10.8)
  • Note:—IQR indicates interquartile range.
  • ↵a P values for group comparisons were determined by χ2 or Fisher exact tests for categoric variables or by Mann-Whitney U tests for continuous variables, as appropriate.
  • ↵b Value statistically significant (statistical significance was set at P < .0083 after Bonferroni correction for multiple comparisons).