Table 1 Patients’ total characteristics and comparison between the two groups

Age(y/rs)

59.04 ± 9.27

58.87 ± 9.12

59.46 ± 9.65

0.254

Female

276(78.19%^a)

198(77.04%)

78(73.58%)

0.483

Hypertension

199(56.37%^a)

148(57.59%)

51(48.11%)

0.099

Diabetes

23(6.52%^a)

14(5.45%)

9(8.49%)

0.279

Hunt-Hess Score (M, IQR)

2(3)

2(3)

2(3)

0.755

mFisher Score (M, IQR)

1(1)

1(1)

1(1)

0.995

Pre-NIHSS (M, IQR)

0(7.25)

0(6.75)

1(7.75)

0.550

Parent Arteries

0.715

 ICA

73(20.11%)

51(19.84%)

22(20.75%)

 ICA-PCoA

267(73.55%)

188(73.15%)

79(74.53%)

 PCoA

23(6.34%)

18(7.00%)

5(4.72%)

Aneurysm Features

 Unruptured

112(30.85%)

76(29.57%)

35(33.02%)

0.410

 Left side

201(55.37%)

142(55.25%)

59(55.66%)

0.943

 Neck Diameter

4.82 ± 3.79

4.67 ± 2.36

4.62 ± 1.95

0.481

 Top Diameter

6.55 ± 4.16

6.32 ± 3.11

6.42 ± 3.26

0.649

 T/N Ratio

1.46 ± 0.66

1.46 ± 0.61

1.48 ± 0.75

0.803

 Intraoperative rupture

9(2.48%)

9(3.50%)

0(0%)

0.064

Fetal PCoA

22(6.06%)

19(7.39%)

3(2.83%)

0.098

Paralysis of III nerve

74(20.39%)

63(24.51%)

11(10.37%)

0.002^a

Complications

 Cerebral Infarction

72(19.83%)

60(23.35%)

12(11.32%)

0.029^**

 Hydrocephalus

24(6.61%)

19(7.39%)

5(4.72%)

0.342

 Hemorrhage

9(2.48%)

7(2.72%)

2(1.88%)

1

 Intracranial infections

2(0.05%)

2(0.78%)

0

1

Post-NIHSS (M, IQR)

0(9.00)

1(12.00)

0(1.75)

0.000^**

mRS Score

 ≥2 at Discharge

108(29.75%)

92(35.80%)

16(15.09%)

0.000^**

 ≥2 at Follow-up

49(13.50%)

40(15.56%)

9(8.49%)

0.073