Table 2:

Mean values and SDs for measurements

	iNPH (n = 30)	iNPH + AD (n = 10)	AD (n = 18)	Controls (n = 26)	P1^{^a}	P2^{^b}
Width of the ventricle at AC level (mm)	41.2 ± 5.0	41.0 ± 5.9	35.6 ± 5.8	27.2 ± 6.2	.002	.014
Width of the brain at AC level (mm)	29.7 ± 3.5	29.3 ± 3.6	33.2 ± 4.6	40.7 ± 4.2	.006	.029
Width of the ventricle at PC level (mm)	35.3 ± 6.1	32.9 ± 4.7	28.7 ± 6.9	18.8 ± 6.2	.002	.027
Width of the brain at PC level (mm)	29.6 ± 3.9	31.0 ± 3.0	34.0 ± 5.3	41.9 ± 4.7	.010	.150
BVR at AC level	0.74 ± 0.16	0.75 ± 0.26	0.98 ± 0.31	1.59 ± 0.45	<.001	<.001
BVR at PC level	0.88 ± 0.25	0.97 ± 0.25	1.34 ± 0.76	2.54 ± 1.08	<.001	<.001
Evans index	0.34 ± 0.04	0.34 ± 0.37	0.32 ± 0.40	0.28 ± 3.8	.079	.286
z-Evans index	0.43 ± 0.04	0.43 ± 0.61	0.38 ± 0.61	0.29 ± 6.3	.001	.016
Callosal angle (degree)	65.0 ± 20.2	61.0 ± 15.5	86.1 ± 24.0	103.7 ± 15.9	.005	.010
Total intracranial volume (mL)	1519 ± 127	1457 ± 139	1513 ± 200	1484 ± 146	.741	.443
Total CSF volume (mL)	433.2 ± 82.0	408.7 ± 105	406.6 ± 97.1	332.2 ± 112	.428	.654
Brain parenchyma volume (mL)	1086 ± 85.4	1048 ± 120	1106 ± 145	1152 ± 157	.358	.175

↵a P1 indicates a probability value of iNPH vs AD based on the Mann-Whitney–Wilcoxon test.
↵b P2 indicates the probability value of iNPH +AD vs AD based on the Mann-Whitney–Wilcoxon test.