Demographic information of the sample.

<p>Demographic information and neuropsychological tests' scores. Chi square was used for gender comparison. One-way ANOVA test with Bonferroni correction for multiple comparisons was used for age, education-year, and MMSE score comparisons (significance level: : p_corr<0.05).</p>a<p>: Significant compared to aMCI and control groups;</p>b<p>: Significant compared to AD group.