Table 1.

Characteristics of the communicating hydrocephalus group

Parameter	Mean $\pm$ SD	Range
Subjects	30 (total)	–
INPH	15	–
Communicating hydrocephalus	9	–
Other	6	–
Sex (female/male)	14/16	–
Age (years)	75 $\pm$ 6	60–86
MMSE	24 $\pm$ 5	15–30
Evans’ index	0.37 $\pm$ 0.04	0.31–0.47
Heart rate (bpm)	72 $\pm$ 13	47–98