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WEB 17 (n = 38) pWEB (n = 70) P Value Adjusted P Value Patient age (yr) 55.7 ± 12.7 57.3 ± 12.2 .54 .72 Female sex 25 (65.8%) 52 (74.3%) .35 .61 Rupturedaneurysms 10 (26.3%) 24 (34.3%) .39 .59 WFNS I 2 (5.3%) 10 (14.3%) .82 .06 WFNS II 2 (5.3%) 3 (4.3%) WFNS III 2 (5.3%) 4 (5.7%) WFNS IV 1 (2.6%) 2 (2.9%) WFNS V 3 (7.9%) 5 (7.1%) Fisher 1 1 (2.6%) 2 (2.9%) .77 .30 Fisher 2 0 (0%) 2 (2.9%) Fisher 3 3 (7.9%) 5 (7.1%) Fisher 4 6 (15.8%) 13 (18.6%) Aneurysm location AcomA 14 (36.8%) 15 (21.4%) .08 .92 Pericallosal 0 (0%) 1 (1.4%) 1.0 .24 MCA 4 (10.5%) 15 (21.4%) .19 .60 ICA Paraophthalmic 1 (2.6%) 7 (10.0%) .26 .06 PcomA 4 (10.5%) 5 (7.1%) .72 .55 Terminus 3 (7.9%) 0 (0%) .04 .25 BA 9 (23.7%) 24 (34.3%) .25 .82 SUCA 1 (2.6%) 0 (0%) .35 .01 PICA 2 (5.3%) 3 (4.3%) 1.0 .53 Anterior circulation 26 (68.4%) 43 (61.4%) .47 .63 Posteriorcirculation 12 (31.6%) 27 (38.6%) Bifurcation location 27 (71.1%) 54 (77.1%) .49 .72 Aneurysmsize(mm) 4.9 ± 1.5 5.6 ± 1.4 .007 .55 Neck width (mm) 3.6 ± 1.1 4.2 ± 1.3 .04 .95 D/N ratio 1.4 ± 0.5 1.4 ± 0.4 .56 .90 Wide neck 35 (92.1%) 65 (92.9%) 1.0 .66 Note:—WFNS indicates World Federation of Neurosurgical Societies grading scale; D/N ratio, dome-to-neck ratio; PcomA, posterior communicating artery; BA, basilar apex; SUCA, superior cerebellar artery.
↵a Data are number and percentage of means.
WEB 17 (n = 38) pWEB (n = 70) P Value Adjusted P Value WEB type DL 0 (0%) 6 (8.6%) .09 .003 SL 31 (81.6%) 46 (65.7%) .08 .001 SLS 7 (18.4%) 18 (25.7%) .39 .02 WEB only 36 (94.7%) 62 (88.6%) .49 .02 Additional coiling 1 (2.6%) 1 (1.4%) 1.0 1.0 Additional stents 1 (2.6%) 7 (10.0%) .26 .005 Treatmentduration(min) 122 ± 67 133 ± 67 .48 .007 Fluoroscopy time (min) 25.4 ± 20.1 27.6 ± 23.3 .77 .02 Radiation dose (cGy × cm2) 10,319 ± 7108 11,899 ± 9142 .55 .03 Contrast (mL) 151 ± 68 145 ± 72 .59 .70 Note:—DL indicates Dual-Layer; SLS, Single-Layer Sphere.
↵a Data are number and percentage of means.
WEB 17 (n = 38) pWEB (n = 70) P Value AdjustedP Value Complete occlusion (RROC 1) 22 (57.9%) 38 (54.3%) .55 .21 Neck remnant (RROC 2) 8 (21.1%) 11 (15.7%) Aneurysm remnant (RROC 3) 8 (21.1%) 21 (30.0%) Note:—RROC indicates Raymond-Roy occlusion classification.
WEB 17 (n = 38) pWEB (n = 70) P Value Adjusted P Value Thromboembolic events 2 (5.3%) 10 (14.3%) .21 .002 Ischemic stroke 1 (2.6%) 5 (7.1%) .42 .06 Hemorrhagic complications 2 (5.3%) 1 (1.4%) .28 .37 Neurologic complications 1 (2.6%) 2 (2.9%) 1.0 1.0
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