Table 2. T-scores of the standard neuropsychological assessments of five cognitive domains in the cognitively unimpaired and cognitive impairment groups.

Cognitive domains	Total	Cognitively impaired	Cognitive impairment	Z value	P value
	n = 613	n = 117	n = 496
Global cognition
MoCA	21.0(19.0,24.0)	26.0(24.0,27.0)	21.0(18.0,23.0)	-13.389	<0.001
MMSE	25.0(23.0,27.0)	27.0(26.0,29.0)	25.0(23.0,26.0)	-10.944	<0.001
Memory	49.9(45.6,54.7)	54.7(51.5,58.3)	48.5(44.8,52.9)	-9.588	<0.001
AVLT 5	50.3(43.4,57.1)	53.7(46.8,60.6)	46.8(39.9,57.1)	-4.920	<0.001
AVLT1-5	49.0(43.1,56.5)	53.2(48.1,59.0)	47.3(40.8,55.7)	-5.805	<0.001
CFT- memory	48.3(42.3,57.6)	57.9(50.7,63.9)	47.1(41.1,53.1)	-8.940	<0.001
Attention	50.2(45.5,55.0)	56.6(53.0,59.9)	48.7(44.1,53.1)	-11.373	<0.001
SDMT	52.3(46.6,56.1)	56.6(53.4,60.6)	50.2(44.2,54.9)	-9.679	<0.001
TMT-A	49.4(44.6,55.1)	57.6(52.7,62.0)	47.0(42.1,52.7)	-11.427	<0.001
Executive function	50.9(46.6,54.7)	55.6(53.2,58.1)	49.7(45.8,53.6)	-10.851	<0.001
TMT-B	50.1(43.6,57.2)	57.9(53.2,62.8)	48.2(40.8,54.7)	-9.844	<0.001
SCWT-C	53.3(46.7,56.0)	54.7(52.0,57.3)	53.3(45.3,56.0)	-5.526	<0.001
SCWT-T	51.4(47.6,56.0)	55.8(52.0,57.9)	50.6(47.0,55.0)	-7.781	<0.001
Language	50.4(45.9,54.8)	53.9(50.4,58.6)	49.7(45.2,53.9)	-6.736	<0.001
AFT	49.7(42.3,55.4)	55.4(47.9,61.0)	47.9(42.3,55.4)	-6.412	<0.001
BNT	54.8(48.2,58.1)	54.8(51.5,58.1)	51.5(44.9,54.8)	-3.608	<0.001
Visual space	54.7(45.5,57.0)	55.9(54.7,58.1)	52.5(41.2,56.9)	-8.374	<0.001
CFT-copy	54.7(45.5,57.0)	55.9(54.7,58.1)	52.5(41.2,56.9)	-8.374	<0.001

Abbreviations: MoCA, Montreal Cognitive Assessment; MMSE, Mini-Mental State Examination; AVLT, Auditory-Verbal Learning Test; CFT, Complex Figure Test; SDMT, Symbol Digit Modalities Test; TMT, Trail Making Test; SCWT, Stroop Color, and Word Test; AFT, Animal verbal fluency test; BNT, Boston Naming Test