Table 3.

Demographic and baseline clinical characteristics of the participants who had 2- and 4-year follow-ups. Means ± SDs.

	Baseline	Status at 2-year Follow Up			Status at 4-year Follow up
	MCI (CDR=.5)	Normal (CDR=0)	MCI (CDR=.5)	Demented (CDR≥1)	Normal (CDR=0)	MCI (CDR=.5)	Demented (CDR≥1)
N	141	10	82	19	7	48	30
Age, years	75.40 (7.84)	75.50 (5.97)	75.56 (7.76)	79.79 (6.12)	70.86 (5.81)	74.00 (7.20)	78.03 (6.73)
Education, highest grade completed	15.70 (2.54)	15.60 (2.12)	15.80 (2.63)	16.32 (2.63)	16.29 (2.22)	15.79 (2.72)	16.93 (1.95)
Sex, male:female	80:61	4:6	52:30	11:8	1 :6	33 :15	20 :10
Clinical Dementia Rating, sum of boxes	1.27 (0.07)	0.75 (0.49)	1.28 (0.75)	1.71 (0.95)	1.29 (0.86)	1.11 (0.68)	1.68 (0.88)
Mini-Mental State Exam, score	28.11 (0.18)	28.70 (0.95)	28.31 (1.15)	27.79 (1.13)	29.14 (0.69)	28.28 (1.16)	28.17 (1.09)
Geriatric Depression Scale, score	2.35 (0.19)	1.60 (0.97)	2.31 (2.37)	3.21 (2.25)	1.57 (1.13)	2.53 (2.52)	2.33 (2.09)