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Table 2: The basic characteristics of the 2 study groups according to the occurrence of contrast stasis
No Contrast Stasis (n = 197, 65.4%) Contrast Stasis (n = 104, 34.6%) P Value
Male 38 (19.3%) 27 (26.0%) .188
Age (yr) 57.4 ± 10.49 59.1 ± 9.76 .159
Type <.001
    Sidewall 114/199 (57.3%) 85/199 (42.7%) 
    Bifurcation 83/102 (81.4%) 19/102 (18.6%) 
Diameter <.001
    Small (≤5 mm) 130/173 (75.1%) 43/108 (24.9%) 
    Medium (5∼15 mm) 63/119 (52.9%) 56/119 (47.1%) 
    Large (≥15 mm) 4/9 (44.4%) 5/9 (55.6%) 
Neck <.001
    ≤4 mm 142/192 (74.0%) 50/192 (26.0%) 
    >4 mm 55/109 (50.5%) 54/109 (49.5%) 
Dome-to-neck ratio 1.22 ± 0.531 1.18 ± 0.578 .521
Volume (cm³) 0.101 ± 0.290 0.297 ± 0.915 .035
Method .001
    Catheter only 129/175 (73.7%) 46/175 (26.3%) 
    Balloon-assisted 48/86 (55.8%) 38/86 (44.2%) 
    Stent-assisted 20/40 (50.0%) 20/40 (50.0%) 
Obliteration grade .641
    0 (complete) 29/42 (69.0%) 13/42 (31.0%) 
    1 (≥90%) 74/106 (69.8%) 32/106 (30.2%) 
    2 (70–89%) 78/125 (62.4%) 47/125 (37.6%) 
    3 (50–69%) 13/23 (56.5%) 10/23 (43.5%) 
    4–5 (<50%) 3/5 (60.0%) 2/5 (40.0%) 
Packing attenuation (%) 33.0 ± 12.11 30.7 ± 11.18 .113