Table 2.

Demographic and clinical characteristics of study participants. Means (± SE), except as noted. For continuously distributed variables, effect sizes are eta-squared and p-values are based on one-way ANOVA. For frequency counts (sex) and percentages (prevalence of health conditions), effect sizes are Cramer’s V and p-values are based on Pearson’s chi-squared tests.

	Normal Control (CDR=0)	Amnestic MCI (CDR=.5)		Nonamnestic MCI (CDR=.5)		η2 or V	p
		Single Domain	Multiple Domain	Single Domain	Multiple Domain
N	68	36	45	26	17
Age, years	72.41 (SD=7.25)	75.08 (SD=5.69)	78.33 (SD=7.66)	74.81 (SD=8.62)	75.59 (SD=7.69)	.087	.002
Education, highest grade completed	15.93 (SD=2.49)	15.92 (SD=2.17)	15.93 (SD=2.50)	15.42 (SD=2.73)	15.18 (SD=2.16)	.011	.714
Sex, male:female	27:41	26:10	28:17	14:12	4:13	.301	.002
Clinical Dementia Rating, sum of boxes	0.03 (0.01)	0.89 (0.09)	1.46 (0.12)	1.21 (0.15)	1.41 (0.18)	.528	<.001
Mini-Mental State Exam, score	29.26 (0.11)	28.33 (0.19)	28.11 (0.18)	28.54 (0.27)	27.65 (.27)	.208	<.001
Activities of Daily Living - Prevention Instrument, score	0.73 (0.18)	3.17 (0.60)	3.80 (0.63)	2.17 (0.58)	6.71 (1.80)	.195	<.001
Geriatric Depression Scale, score	1.24 (0.26)	2.12 (0.39)	2.76 (0.39)	1.96 (0.35)	2.74 (0.52)	.075	.007
Prevalence of Specific Health Conditions (percent of subjects):
Hypertension	44.8	47.1	54.6	34.8	47.1	.119	.647
Hypercholesterolemia	38.8	40.0	33.3	55.6	46.7	.137	.587
Peripheral Vascular Disease	5.8	3.6	2.6	5.9	0	.098	.838
TIA	0	0	2.8	5.3	6.7	.174	.321
Seizure	0	0	2.7	0	0	.143	.541
Minor Head Injury	3.5	3.1	11.9	8.7	0	.174	.270
Cancer	8.5	6.3	7.1	0	0	.132	.572
Diabetes	13.1	6.3	16.3	16.0	5.9	.193	.608
Kidney Disease	1.6	0	2.4	0	0	.094	.817
Gastrointestinal Disease	18.0	11.1	13.5	33.3	26.7	.183	.296
Depression	4.8	2.9	33.3	15.4	11.8	.349	<.001
Anxiety	1.6	2.9	10.0	0	0	.205	.111