Table 1.

Baseline demographic and clinical variables for all patients included and for the subgroups that were observed for 2 and 6 years, respectively

Variables	Baseline (n = 122) (1)	Dropped out after 2 years (n = 41) (2)	Followed up for 6 years (n = 81) (3)	ANOVA p value	Post hoc p values (Tukey)
Mean age, years	62.5 (7.9) [45–79]	65.3 (8.2) [48–79]	61.0 (7.5) [45–78]	0.02	1 vs. 2 = 0.11 ns 1 vs. 3 = 0.41 ns 2 vs. 3 = 0.01**
Education, years	12.5 (3.3) [6–20]	13.0 (3.7) [6–20]	12.3 (3.1) [6–18]	0.47	ns
GDS	2.5 (0.5) [1–3]	2.5 (0.5) [1–3]	2.5 (0.5) [1–3]	0.20	ns
MMSE	28.8 (1.1) [25–30]	29.1 (1.0) [27–30]	28.7 (1.2) [25–30]	0.97	ns
T-tau, ng/L	302.4 (173.3) [79–1,090]	325.1 (218.9) [90–1,090]	291.0 (145.5) [79–660]	0.77	ns
P-tau, ng/L	55.1 (23.6) [22–188]	52.9 (31.5) [22–188]	56.3 (18.6) [24–100]	0.60	ns
Aβ42, ng/L	686.2 (242.4) [160–1,507]	650.2 (232.0) [220–1,140]	704.2 (246.9) [160–1,507]	0.52	ns
T-tau/Aβ42 ratio	0.54 (0.52) [0.07–3.76]	0.63 (0.73) [0.16–3.78]	0.49 (0.37) [0.07–1.68]	0.36	ns
Females, n (%)	67 (54.9)	24 (58.5)	43 (53.1)	X2	ns

Values in parentheses are SD, and values in square brackets are ranges, unless otherwise indicated. ns, nonsignificant.

^**p ≥ 0.01.