Abstract O-024 Table 1

Comparison between anterior and posterior circulation aneurysms

Baseline characteristicsPosterior circulation aneurysm patients (N=173)Anterior circulation aneurysm patients (N=733)P-value
Age, Mean SD 61.7 11.6 59.3 12.8 0.017
Female,% (n/N) 78.6% (136/173) 73.9% (542/733) 0.203
Ruptured aneurysm, % (n/N) 38.7% (67/173) 30.3% (222/733) 0.032
Aneurysm Size % (n/N) 0.285
Small (<11mm) 86.1% (149/173) 89.5% (656/733)
Large (11 to 25 mm) 13.3% (23/173) 10.4% (76/733)
Giant (>25mm) 0.6% (1/173) 0.1% (1/733)
Wide-Neck% (n/N) 72.2% (117/162) 59.9% (439/733) 0.002
Stent-Assisted Coiling % (n/N) 38.2% (66/173) 36.2% (265/733) 0.624
Balloon-Assisted Coiling % (n/N) 16.8% (29/173) 20.6% (151/733) 0.255
Raymond Occlusion, Class I
Immediate Post-Procedure% (n/N) 37.6% (65/172) 41.1% (298/729) 0.457
One-Year Follow-Up % (n/N) 55.1% (43/78) 64.4% (250/388) 0.121
Recanalization at One-Year Follow-Up % (n/N) 12.8% (10/78) 14% (54/385) 0.205
Retreatment through One-Year Follow-Up 6.2% (5/81) 7% (28/399) 0.190
Device-Related SAE within 24 Hours of Procedure % (n/N) 1.7% (3/173) 3% (22/733) 0.360
Length of Hospital Stay, Median [IQR] 2 [1–14] 1 [1–10] 0.053