Table 4.

Differences in cognitive performance in subgroups of subjects who provided CSF samples.

	Low-risk group (n = 26)	Medium-risk group (n = 22)	High-risk group (n = 11)	F-value	P-value
MoCA test	23.38 ± 2.28	21.05 ± 3.03	20.09 ± 3.75	7.32	<0.01
RAVLT (immediate memory)	34.85 ± 6.73	28.68 ± 6.90	26.55 ± 10.69	4.34	<0.01
RAVLT (delayed memory)	6.65 ± 1.57	4.68 ± 1.46	4.09 ± 3.33	6.03	<0.01
DST	11.73 ± 1.95	11.23 ± 1.69	11.09 ± 1.58	0.81	0.50
VFT	40.15 ± 5.71	36.41 ± 5.19	34.73 ± 3.13	4.21	<0.01
DSST	30.12 ± 7.10	24.73 ± 7.80	22.55 ± 5.63	4.51	<0.01
HAMD	1.69 ± 1.67	1.36 ± 1.59	1.36 ± 0.81	0.22	0.88
HAMA	2.38 ± 1.58	2.55 ± 1.57	2.36 ± 1.75	0.06	0.98

Abbreviations: MoCA, Montreal Cognitive Assessment; RAVLT, Rey auditory verbal learning test; DST, digit span test; VFT, verbal fluency test; DSST, digital sign substitution test; HAMD, Hamilton Depression Scale; HAMA, Hamilton Anxiety Scale. The data are expressed as the means ± SD.