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. Author manuscript; available in PMC: 2016 Sep 1.
Published in final edited form as: Alzheimers Dement. 2014 Nov 15;11(9):1080–1089. doi: 10.1016/j.jalz.2014.09.002

Table 1.

Demographic sample characteristics by diagnostic groups

Normal
(n=307)		 EMCI
(n=310)		 LMCI
(n=251)		 AD
(n=212)		 Test
Statistic		 Test
p-value
Age M 77.94 73.21 76.68 77.81 23.841 <.00011
SD 6.88 7.77 8.54 7.95
Female N 158 136 102 85 9.262 .032
% 51.47 43.87 40.64 40.09
Education M 16.40 15.97 16.18 15.81 2.341 .071
SD 2.63 2.67 2.85 2.76
MMSE M 29.04 28.32 27.62 22.37 536.441 <.00011
SD 1.26 1.56 1.80 3.26
APOE ε43 N 79 131 122 138 83.562 <.00012
% 25.99 43.23 48.80 66.03
1

ANOVA (F-test degrees of freedom (df)=3);

2

Chi-square (df=3);

3

APOE ε4 data was missing for 3 Normal, 7 EMCI, 1 LMCI, and 3 AD individuals.