Table 1 Summary of characteristics for AD, MCI, and CN samples

Sample number

271

248

91

Male:female

1:2.15

1:1.30

1:0.82

Age (mean ± 1 S.D.)

79.55 ± 5.83

77.37 ± 6.12

71.29 ± 5.07

MMSE (mean ± S.D.)

18.09 ± 4.49

24.54 ± 2.98

29.32 ± 0.94

APOE genotypes

E2/2 = 2, E3/2 = 14, E3/3 = 148, E4/2 = 3, E4/3 = 88, E4/4 = 16

E2/2 = 1, E3/2 = 11, E3/3 = 163, E4/2 = 1, E4/3 = 60, E4/4 = 12

E3/2 = 5, E3/3 = 73, E4/3 = 12, E4/4 = 1