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. 2021 May 26;11:11061. doi: 10.1038/s41598-021-90395-0

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© The Author(s) 2021

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 licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence 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 licence, visit http://creativecommons.org/licenses/by/4.0/.

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Receiver operating characteristic (ROC) curves of uFABP3/uCr for distinguishing patients with peripheral arterial disease (PAD, n = 65) from patients without PAD (non-PAD, n = 65) in an unadjusted model (solid line) and an adjusted model (dashed line). The area under the curve (AUC) and the 95% confidence intervals for uFABP3/uCr improved from 0.79 (95%: 0.71–0.87) to 0.86 (95%: 0.80–0.92) after adjusting for eGFR, age, hypercholesteremia, smoking and diabetes.