Table 2 Clinical outcome and revision surgery between both groups

Number of patients

46

39 (84.8)

7 (15.2)

mRS at discharge

0.107

 ≤ 2

35 (76.1)

28 (71.8)

7 (100)

 > 2

11 (23.9)

11 (28.2)

-

Clinical improvement at discharge

0.499

 Improved

31 (67.4)

25 (64.1)

6 (85.7)

 Same

12 (26.1)

11 (28.2)

1 (14.3)

 Worse

3 (6.5)

3 (7.7)

-

mRS last follow-up

0.278

 ≤ 2

30 (88.2)

23 (85.2)

7 (100)

 > 2

4 (11.8)

4 (14.8)

-

Clinical improvement last follow-up

0.82

 Improved

26 (78.8)

20 (76.9)

6 (85.7)

 Same

6 (18.2)

5 (19.2)

1 (14.3)

 Worse

1 (3)

1 (3.8)

-

 Last Follow-up (years)

2.6 ± 2.5

2.5 ± 2.6

3.3 ± 1.9

0.144

Type of 1st revision surgery

 Re-ETV

4 (8.7)

-

4 (57.1)

-

 VPS

3 (6.5)

-

3 (42.9)

-

 Time to 1st revision surgery (years)

1.1 ± 1.1

-

1.1 ± 1.1

-

Type of 2nd revision surgery

 VPS

1 (2.2)

-

1 (14.3)

-

 Time to 2nd revision surgery (years)

0.86

-

0.86

-