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Table 1 Evolution over time of the classic HPN features in the INPH group

From: Serial Tap Test of patients with idiopathic normal pressure hydrocephalus: impact on cognitive function and its meaning

Variable

n

%

M

SD

Range

Age at onset of symptoms (years)

61

 

73.2

6.7

 

Time between start and STT (months)

61

 

27.7

26.2

 

Age at STT

61

 

75.5

6.5

58–86

Educational level—years

61

 

11.5

4.9

2–23

Male

31

 

50.8

  

 < One year with symptoms

15

24.6

   

 > One year with symptoms

46

75.4

   

 < Two years with symptoms

35

57.4

   

 > Two years with symptoms

26

42.6

   

Gait

61

100

   

Cognition

57

90

   

Sphincter

45

69.8

   

One symptom (gait)

4

6.7

   

Two symptoms (*)

21

35

   

Complete triad

35

58.3

   
  1. Values described in mean (M), standard deviation (SD) and percentages (%). STT Serial Tap Test, n number of individuals; ≤ : values equal to or less than the cut-off point; > : values higher than the cut-off point; * gait apraxia associated with cognitive or sphincter symptoms
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Fluids and Barriers of the CNS

ISSN: 2045-8118