Table 1.

Demographic Characteristics and Baseline and Last measurement of CDR

Variables	TOTAL	ADNI	WU
Total of Participants	1499	721	778
Male (%)	51.7%	60.2%	43.8%
Baseline age, mean(SD) y	75.0(7.8)	74.5(7.1)	75.5(8.4)
Age onset, mean(SD), y	73.0(8.9)	71.9(7.7)	73.3(9.3)
Educational level, mean(SD),y	14.6(3.3)	15.6(2.9)	13.6(3.4)
Sum of box, mean(SD)	7.7(5.1)	5.7(4.1)	9.8(5.1)
Follow-up time, y	4.1(2.5)	3.23(2.0)	4.8(2.6)
Baseline CDR 0 (%)	11.4%	4.8%	17.6%
Last CDR	1.4(0.9) [0.5–3]	1.0(0.7) [0.5–3]	1.8(0.9) [0.5–3]
APOE e4+ %	62.3%	65.9%	59.0%

Abbreviations: CDR, Clinical Dementia Rating. APOE, Apolipoprotein E. Y, years