[Retracted] The Levels of Amyloid β-Protein and P181 in Peripheral Blood of Patients with Alzheimer’s Disease Combined with Helicobacter pylori Infection and Their Clinical Significance

Table 2

Analysis of diagnostic specificity and sensitivity of serum p-tau181 and Aβ42.

Serum index	Sensitivity	Specificity	Yorden index	Area under the curve
Aβ42	0.863	0.048	0.011	0.274
p-tau181	0.854	0.206	0.169	0.541
Aβ42 combined with p-tau181	0.972	0.305	0.204	0.875
	7.414	6.624	4.251	5.724
	<0.05	<0.05	<0.05	<0.05