Reliable Measurements of the β-Amyloid Pool in Blood Could Help in the Early Diagnosis of AD

Table 1

Demographic characteristics.

Characteristic	HC	MCI	AD	𝑃
Male/female	8/8	4/4	8/8	—
Age (years, mean ± SD)	70.3 ± 4.1^M,A	77.3 ± 3.6^H	78.8 ± 4.7^H	0.0002^*
ApoE ε4 carrier	6%	62%	62%	0.002^§
Education level (undergraduate/; graduate)	50%/50%	87%/13%	62%/38%	0.202^§

^* Kruskal-Wallis 𝑈 test, contrasts with Mann-Whitney 𝑈 test. H, M, and A mean significant with regard to HC, MCI, and AD, respectively. ^§Chi-square test.