Table 1 General data

Age (years)

51.32 ± 7.25

63.58 ± 6.87

6.092

0.000

Male/female (n)

42/45

7/8

0.001

0.982

BMI (kg/m²)

22.59 ± 2.42

23.12 ± 2.18

0.794

0.429

History of hypertension [n (%)]

23 (26.44)

11 (73.33)

1.278

0.046

Preoperative intracranial hematoma volume (mL)

18.16 ± 3.56

23.42 ± 4.37

5.107

0.000

Aneurysm size (mm)

5.43 ± 1.72

16.38 ± 5.43

15.163

0.000

Preoperative Hunt–Hess grade [n (%)]

6.480

0.002

 I

17 (19.54)

1 (6.67)

–

–

 II

34 (39.08)

4 (26.67)

–

–

 III

32 (36.78)

7 (46.67)

–

–

 IV

4 (4.60)

3 (20.00)

–

–

Timing of surgery [n (%)]

14.903

0.001

 < 24 h

20 (22.99)

1 (6.67)

–

–

 < 48 h

47 (54.02)

7 (46.67)

–

–

 < 72 h

20 (22.99)

7 (46.67)

–

–

Length of hospital stay (days)

11.42 ± 6.42

21.58 ± 9.84

5.192

0.000

Postoperative complications [n (%)]

29.271

0.000

 Cerebral vasospasm

2 (2.30)

3 (20.00)

–

–

 Aneurysm rupture

1 (1.15)

2 (13.33)

–

–

 Cerebral edema

1 (1.15)

2 (13.33)

–

–

 Cerebral infarction

2 (2.30)

3 (20.00)

–

–

 Intracranial infection

0 (0)

2 (13.33)

–

–

 Severe pulmonary infection

1 (1.15)

3 (20.00)

–

–

 NIHSS score

10.13 ± 2.42

16.12 ± 3.68

8.137

0.000