Table 1:

Patient data

Idiopathic Normal Pressure Hydrocephalus
Total Population Median (Range)Shunt Group Median (Range)Conservative Group Median (Range)
No.21174
Age (yr)74 (56–84)74 (56–84)74 (60–79)
Sex (female/male)10:118:92:2
Preoperative clinical state
    NPH score1910 (4–13)10 (4–13)11 (9–13)
    Duration of symptoms (yr)2 (0.5–10)2 (1.0–10.0)0.8 (0.5–10.0)
Postoperative clinical state 12 mo after surgery
    NPH score12 (8–15)12 (8–15)8
  • Note:—NPH indicates normal pressure hydrocephalus.