Table 2.

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

	Low-risk group (n = 24)	Medium-risk group (n = 27)	High-risk group (n = 14)	F-value	P-value
MoCA	23.08 ± 2.73	21.11 ± 3.13	20.36 ± 3.52	4.71	<0.01
RAVLT (immediate memory)	35.92 ± 7.94	29.22 ± 8.36	29.21 ± 10.39	5.08	<0.01
RAVLT (delayed memory)	6.75 ± 1.98	4.93 ± 2.57	4.21 ± 3.24	4.28	<0.05
DST	11.25 ± 1.82	11.30 ± 2.05	11.07 ± 1.44	0.10	0.96
VFT	40.83 ± 6.18	37.48 ± 7.38	37.57 ± 5.91	1.44	0.24
DSST	29.29 ± 7.26	24.81 ± 7.49	23.93 ± 5.93	4.93	<0.01
HAMD	2.00 ± 1.91	1.52 ± 1.67	1.50 ± 1.35	0.51	0.68
HAMA	2.50 ± 1.62	2.67 ± 1.75	2.50 ± 1.87	0.20	0.90

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.