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Table 1: Baseline characteristics
Parameter No.
No. of procedures 129
No. of aneurysms 131
No. of branches covered 228
Sex 
    Female 82 (63.6%)
    Male 47 (36.4%)
Median age (range) (yr) 58 (29–82)
Smoking^{^a} 40 (33.3%)
Multiple aneurysms 32 (24.8%)
Presenting symptoms 
    Asymptomatic 28 (21.7%)
    Headache/dizziness 30 (23.3%)
    Neurologic deficit 71 (55%)
Subarachnoid hemorrhage 
    Immediate (<24 hr) 18 (14.0%)
    Acute (>24 hr and <2 wk) 7 (5.4%)
    Remote (>2 wk) 14 (10.9%)
Pretreatment mRS 
    0–2 101 (78.3%)
    3–5 28 (21.7%)
Aneurysm shape 
    Saccular 49 (37.4%)
    Fusiform 53 (40.5%)
    Dissecting 29 (22.1%)
Aneurysm location 
    Vertebral artery 46 (35.1%)
    PICA 10 (7.6%)
    Vertebrobasilar artery 18 (13.6%)
    Basilar artery 45 (34.5%)
    SCA 4 (3.1%)
    PCA 8 (6.1%)
Aneurysm measurements (median) (range) (mm) 
    Maximal diameter 12 (2–73)
    Neck size (for saccular aneurysms) 5.35 (2–15)
Daughter sac 26 (19.8%)
Prior treatment 
    Endovascular 14 (10.7%)
    Surgery 2 (1.5%)
    Both 1 (0.8%)
Platelet function test 77 (59.7%)
Clopidogrel nonresponders 14 (18.2%)
Treatment of nonresponders 
    Continue clopidogrel 8 (57.1%)
    Switch to ticagrelor 5 (35.8%)
    Other 1 (7.1%)
Note:—SCA indicates superior cerebellar artery.
↵a Data are missing for 9 procedures.