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. Author manuscript; available in PMC: 2009 Jul 20.
Published in final edited form as: Alzheimers Dement. 2006 Oct;2(4):287–293. doi: 10.1016/j.jalz.2006.05.2347

Table 3.

CSF diagnostic statistics to distinguish patients with a clinical diagnosis of AD from cognitively normal control subjects

Biomarker Cutoff Specificity Sensitivity PPV Overall Accuracy PLR
t-tau 404 90% 69% 96% 73% 7.0
p-tau181 77 90% 54.4% 91% 66% 5.2
β-amyloid 42 201 90% 26% 88% 43% 2.8

NOTE. All cutoff values expressed as pg/ml CSF.