Table 1.

Demographics for all patients dichotomized into β-amyloid positive (Aβ+) and β-amyloid negative (Aβ−) groups

Characteristics		Aβ+ (n = 778)	Aβ− (n = 1039)
Gender, n (%)	Male	359 (46%)	512 (49%)
	Female	419 (54%)	527 (51%)
Age, median (IQR)		74 (9)	70 (8)
AD biomarkers, median (IQR)
MMSE		27 (5)	29 (2)
Aβ40, pg/mL		5610 (2703)	5035 (2573)
Aβ42, pg/mL		333.2 (182.8)	641.9 (349.7)
Aβ42/40		0.061 (0.024)	0.130 (0.029)
t-tau, pg/mL		475.6 (265.9)	274.3 (113.3)
p-tau, pg/mL		82.00 (62.10)	33.74 (15.11)
ApoE, median (IQR)
Total apoE, μg/mL		3.096 (1.420)	2.964 (1.426)