Table 2.

Correlations between plasma GFAP baseline levels and age, CSF Aβ42/40, CSF T-tau, and CSF P-tau181

		Age	Aβ42/40	T-tau	P-tau181
Aβ−	r	0.57	− 0.33	0.06	− 0.03
	p	< 0.0001	0.003	0.61	0.79
Aβ+	r	0.46	−0.18	0.29	0.28
	p	< 0.0001	0.13	0.01	0.01

r Spearman’s r, Aβ+ Aβ positive, Aβ− Aβ negative