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Table 1: 
Patient and index aneurysm characteristics
CharacteristicsCA (n = 111)SAC (n = 94)Total (n = 205)
Patient
 Age at treatment (mean) (SD) (yr)58.6 (10.4)58.0 (8.8)58.3 (9.7)
 Female (No.) (%)77 (69.4)65 (69.1)142 (69.3)
STAT type lesion
 STAT-1: unruptured aneurysm, never treated, with a dimension of ≥ 10 mm (No.) (%)21 (18.9)17 (18.1)38 (18.5)
 STAT-2: major recurrent aneurysm after previous coiling, but no previous stent placement (No.) (%)41 (36.9)34 (36.2)75 (36.6)
 STAT-3: small (<10 mm), wide-neck (≥ 4 mm) aneurysm (No.) (%)49 (44.1)43 (45.7)92 (44.9)
Pretreatment mRS score (No.) (%)
 084 (75.7)70 (74.5)154 (75.1)
 121 (18.9)20 (21.3)41 (20.0)
 25 (4.5)2 (2.1)7 (3.4)
 31 (0.9)1 (1.1)2 (1.0)
 401 (1.1)1 (0.5)
Presentation
 Symptomatic4 (3.6)4 (4.3)8 (3.9)
 Additional aneurysm to a previously ruptured and treated one13 (11.7)6 (6.4)19 (9.3)
 Incidental finding94 (84.7)84 (89.4)178 (86.8)
Index aneurysm location (No.) (%)
 Anterior circulation78 (70.3)58 (61.7)136 (66.3)
  Ophthalmic/paraophthalmic7 (6.3)3 (3.2)10 (4.9)
  Posterior communicating/anterior choroidal7 (6.3)13 (13.8)20 (9.8)
  Carotid terminus6 (5.4)1 (1.1)7 (3.4)
  MCA bifurcation/M118 (16.2)14 (14.9)32 (15.6)
  Anterior communicating/A140 (36.0)25 (26.6)65 (31.7)
  Distal ACA02 (2.1)2 (1.0)
 Posterior circulation33 (29.7)36 (38.3)69 (33.7)
  PCA03 (3.2)3 (1.5)
  Basilar terminus24 (21.6)23 (24.5)47 (22.9)
  SCA3 (2.7)5 (5.3)8 (3.9)
  Basilar trunk2 (1.8)02 (1.0)
  Vertebrobasilar junction2 (1.8)2 (2.1)4 (2.0)
  PICA2 (1.8)3 (3.2)5 (2.4)
Index aneurysm maximal external size (mean) (SD) (range) (mm)9.2 (6.4)9.2 (5.9)9.2 (6.1)
(2–50)(3–35)(2–50)
 <10 (No.) (%)74 (66.7)63 (67.0)137 (66.8)
 ≥10 (No.) (%)37 (33.3)31 (33.0)68 (33.2)
Index aneurysm neck size (mean) (SD) (range) (mm)4.4 (2.2)4.1 (1.6)4.3 (1.9)
(2–20)(2–9)(2–20)
Aneurysm neck ≥4 mm (No.) (%)72 (64.9)58 (61.7)130 (63.4)
  • Note:—ACA indicates anterior cerebral artery; PCA, posterior cerebral artery; SCA, superior cerebellar artery.