Table 1 Baseline characteristics in shunt responders and non-responders measured before tap test.

1

Number of patients

80

20

2

Male/Female

44/36

14/6

NS

3

Age (years)*

75(71-78)

75(71.2-78.5)

NS

4

Evans index (%)*

35(33-38)

34.6(32.7-38)

NS

5

CSFP(cmH₂0)*

13(9-15)

12(8-12.8)

< 0.05

6

GS-Gait-pre*

2(2-3)

2(2-3)

NS

7

GS-Cogn-pre*

2(1-3)

2(1-3.7)

NS

8

GS-Urin-pre*

2(1-3.7)

2.1(1.4)

NS

9

GS-Total-pre*

6(4-9.7)

6(4-9.2)

NS

10

TUG-pre (sec)*

19.5(15-26.7)

20(18.2-27)

NS

11

MMSE-pre*

22.5(15-25.7)

25(18.2-27)

NS

12

SAE (patient numbers)

7

8

< 0.005

Pneumonia

0

3

Malignancy

1

1

Vascular events

3

1

Subdural effusion

1

0

Surgery-related**

0

2

Femoral fracture

2

1