. Author manuscript; available in PMC: 2019 Aug 1.

Published in final edited form as: Alzheimers Dement. 2018 Apr 5;14(8):989–997. doi: 10.1016/j.jalz.2018.02.013

Table 4.

Correlation between plasma pTau181 or total tau with tau PET entorhinal cortex SUVR by clinical diagnosis and elevated Aβ PET

Clinical diagnosis and Aβ PET status^*	Phospho-tau 181		Total tau
Clinical diagnosis and Aβ PET status^*	Spearman’s rho	P value	Spearman’s rho	P value
CU A−	−0.057	0.573	0.238	0.017
CU A+	0.287	0.015	0.069	0.563
MCI A−	0.284	0.136	0.212	0.270
MCI A+	0.437	0.020	0.104	0.598
AD A+	0.125	0.456	0.159	0.341
All A−	0.018	0.835	0.228	0.009
All A+	0.580	<0.001	0.194	0.022

Abbreviations: AD, Alzheimer’s disease dementia; Aβ, amyloid-beta; CU, cognitively unimpaired; MCI, mild cognitive impairment; PET, positron emission tomography; SUVR, standardized uptake value ratio.

A+ = Aβ PET SUVR>1.42.