Table 2.

Differences in cognitive scale items between the three groups.

Item/Group	NC	SCD	aMCI	P Value
HAMD	0(0–10)	0(0–4)	0(0–20)	0.771
HAMA	0(0–10)	0(0–3)	0(0–34)	0.945
AVLT-H (S)	6.86 ± 1.588	5.27 ± 1.971	4.06 ± 1.798	<1e-04***
AVLT-H (L)	6.61 ± 1.500	4.81 ± 2.191	3.61 ± 1.720	<1e-04***
MoCA-B	25.25 ± 1.720	24.04 ± 2.490	18.50 ± 3.015	<1e-04***
BNT (unit)	3.97 ± 0.167	3.92 ± 0.272	3.39 ± 0.778	<1e-04***
VFT (unit)	17.00 ± 3.171	15.31 ± 3.696	14.00 ± 3.726	0.009**
STT-B (S)	171.97 ± 39.823	173.23 ± 45.921	220.06 ± 58.516	0.004***
CDT30	25.90 ± 2.792	25.65 ± 2.314	21.50 ± 3.974	<1e-04***
ADL	24.17 ± 7.225	24.62 ± 6.735	26.17 ± 9.218	0.374

HAMD, Hamilton's Depression Scale; HAMA, Hamilton's Anxiety Scale; AVLT-H (S), Auditory verbal learning test-Huashan version for short term; AVLT-H (L), Auditory verbal learning test-Huashan version for long term; MoCA-B, Montreal Cognitive Assessment-Basic; BNT, Bonston naming test; VFT, Verbal fluency test; STT-B, Shape trail test B; CDT30, Draw the clock test; ADL, Activity of Daily Living. BNT and VFT’s units were single, STT-B’s unit was second, and the other items’ units were scores. Skewed distribution data, such as depression and anxiety score data, were expressed by median, maximum, and minimum values, and the rest of normal distribution data were expressed by mean plus or minus standard deviation. And we applied non-parametric rank sum test in depression and anxiety score data analysis, and one way ANOVA analysis in the other neuropsychological assessment items. ** shows P < 0.01, *** shows P < 0.005.