Table 2.

Radiological measures and volumes of cerebral ventricles and choroid plexus of REF and iNPH cohorts.

	REF	iNPH	Significance
Evans index	0.30 ± 0.05	0.38 ± 0.04	0.001
DESH (Y/N)	0/8	6/3	ns
Callosal angle (degrees)	117.3 ± 14.3	76.3 ± 29.0	0.003
Volume measures (ml)
Choroid plexus	0.75 ± 0.22	0.88 ± 0.23	ns
CSF, lateral ventricle	14.83 ± 14.43	68.85 ± 18.52	<0.001

Note: Categorical data presented as numbers; continuous data presented as mean ± standard deviation. Significant differences between groups were determined by Pearson Chi-square test for categorical data and by independent samples t-test for continuous data.

CSF: cerebrospinal fluid; DESH: disproportionate enlargement of subarachnoid spaces hydrocephalus; iNPH: idiopathic normal pressure hydrocephalus; REF: reference patients.