TABLE 1.

Demographics and neuropsychological characteristics of HCs, SCD, and aMCI three groups.

	HCs (n = 42)	SCD (n = 43)	aMCI (n = 40)	p
Age (years)	63.82 (7.35)	63.63 (7.10)	64.65 (7.99)	0.673 a
Gender (M/F)	16/26	10/33	18/22	0.104 b
Education level (years)	12.36 (2.41)	11.85 (3.26)	11.89 (3.08)	0.679 a
MMSE	29.00 (28.00, 30.00)	28.00 (27.00, 29.00)	27.50 (26.00, 29.00)	0.055 c
MoCA	26.00 (25.00, 28.00)	25.00 (24.00, 27.00)	24.00 (22.00, 25.00) d ,*, e ,**, f ,***	0.000 c
MDRS‐2	142.00 (140.75, 144.00)	141.00 (139.00, 143.00)	138.00 (135.25, 141.00) d ,*, e ,**, f ,***	0.001 c
Composite Z scores of each cognitive domain
Episodic memory	0.28 (0.59)	0.21 (0.62)	−0.52 (0.55) e ,***, f ,***	0.000 a
Executive function	0.16 (0.53)	0.27 (0.52)	−0.46 (0.56) e ,***, f ,***	0.000 a
Information processing speed	0.12 (0.75)	0.17 (0.70)	−0.31 (0.71) e ,**, f ,*	0.006 a
Visuospatial function	0.30 (−0.18, 0.64)	0.15 (−0.37, 0.64)	0.01 (−0.50, 0.64)	0.141 c

Note: Numbers are given as means (standard deviation, SD) or median (interquartile range, IQR).

Abbreviations: aMCI, amnestic mild cognitive impairment; HCs, healthy controls; MDRS‐2, Mattis Dementia Rating Scale‐2; MMSE, Mini‐Mental State Examination; MoCA, Montreal Cognitive Assessment test; SCD, subjective cognitive decline.

^a One‐way ANOVA.

^b Chi‐square test.

^c Kruskal‐Wallis H‐test.

^d Post hoc analyses showed a significant group difference between HCs and SCD.

^e Post hoc analyses showed a significant group difference between SCD and aMCI.

^f Post hoc analyses showed a significant group difference between HCs and aMCI.

*p < 0.05, **p < 0.01, ***p < 0.001.