Table 1:

Baseline demographics and procedures

TotalStent-AssistedNo StentP
No. of aneurysms18153231492
Age, y, mean ± SD50.5 ± 12.951.8 ± 11.550.3 ± 13.1.009
Ruptured aneurysm, n (%)767 (42.3)38 (11.8)729 (48.9)<.0001
Female, n (%)986 (65.5)196 (68.8)790 (64.8).20
Location, n (%)
    ICA647 (35.6)134 (41.5)513 (34.4).015
    MCA489 (26.9)94 (29.1)395 (26.5).34
    AcomA446 (24.6)49 (15.2)397 (26.6)<.0001
    Vertebrobasilar160 (8.8)42 (13.0)118 (7.9).003
    Pericallosal59 (3.3)2 (0.6)57 (3.8).003
    PCA14 (0.8)2 (0.6)12 (0.8).73
Aneurysm size, mm, mean ± SD7.1 ± 4.08.2 ± 4.76.8 ± 3.8<.0001
Neck size, mm, mean ± SD3.8 ± 1.95.0 ± 2.63.6 ± 1.6<.0001
Multiple, n (%)1078 (59.4)147 (45.5)931 (62.4).004
AVM-related, n (%)36 (2.0)2 (0.6)34 (2.3).052
No. of procedures16992991400
No. of aneurysms treated in same EVT, n (%)
    11591 (93.6)275 (92.0)1316 (94.0)
    2100 (5.9)24 (8.0)76 (5.4)
    38 (0.5)08 (0.6)
Balloon-assisted, n (%)1017 (56.0)149 (46.1)868 (58.2)<.0001
Packing density, %, mean ± SD26.8 ± 12.324.6 ± 11.127.3 ± 12.5<.0001
  • Note:—AcomA indicates anterior communicating artery; EVT, endovascular treatment; PCA, posterior cerebral artery.