Table 1.

Demographic and Cognitive Characteristics of the MCI participants and by Converter Status

Variable	All (n=23) mean(SD)/N(%)	Stable MCI (n=17)	Converted to AD (n=6)	p-value
		mean(SD)/N(%)	mean(SD)/N(%)
Age (yrs)	75.6 (5.5)	74.5 (5.8)	78.7 (2.9)	0.112
Female	7 (30.4%)	5 (29.4%)	2 (33.3%)	0.618
Education (yrs)	15.6 (3.1)	15.3 (3.1)	16.3 (3.4)	0.497
APOE E4 allele	10/22 (45.5%)	9/16 (56.3%)	1/6 (16.7%)	0.162
Dementia Med	4/22 (18.2%)	2/16 (12.5%)	2/6 (33.3%)	0.292
CDR-Sum	1.3 (0.8)	1.2 (0.8)	1.7 (0.7)	0.229
MMSE	26.7 (2.1)	27.2 (2.0)	25.0 (1.3)	0.018
Memory Z-score	−2.0 (1.2)	−1.5 (1.0)	−3.2 (0.3)	0.001
CVLT-total	34.2 (12.9)	38.6 (12.1)	22.5 (5.5)	0.006
CVLT-sdfr	5.4 (3.7)	7.1 (2.6)	0.7 (0.8)	<0.001
CVLT-ldfr	5.5 (3.9)	6.8 (3.5)	1.8 (2.3)	0.004
Wechsler-Imm	8.2 (3.1)	8.8 (3.3)	6.5 (1.8)	0.128
Wechsler-Del	6.0 (4.2)	7.1 (4.1)	2.8 (2.7)	0.031
GDS	1.5 (1.2)	1.5 (1.1)	1.2 (1.6)	0.609

Abbreviations: MCI=amnestic mild cognitive impairment; AD=Alzheimer’s disease; CDR-Sum = Clinical Dementia Rating, Sum of Boxscores; MMSE=Mini-mental State Examination; CVLT=California Verbal Learning Test; GDS=15-item Geriatric Depression Scale

^*Fischer’s Exact test for categorical variables; Students t-test for continuous variables