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. 2020 Jul 6;3:352. doi: 10.1038/s42003-020-1079-x

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© The Author(s) 2020

Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in a credit line to the material. If material is not included in the article’s Creative Commons license and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/.

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Fig. 1 — Comparison of receiver operating characteristic¹⁴ curves between all 16 biomarker features (top) and the top 8 biomarker features (bottom) from the three diagnosis participant group comparisons: cognitively unimpaired (CU) vs. late mild cognitive impairment (LMCI), LCMI vs. Alzheimer’s disease (AD), and CU vs. AD. Groundline refers to a model that cannot predict better than random chance. The mean ROC is calculated from the average of the five ROC curves produced from the k-fold cross validation.