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. 2022 Jun 6;12:33. doi: 10.1186/s13550-022-00904-z

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Open AccessThis 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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Fig. 5 — Intra-observer and inter-observer repeatability. Bland-Altmann plots with actual difference (left side) and percentage difference (right side), mean error (blue line) and 95% limits of agreement (red lines) for Intra-observer values (a), and inter-observer (b). Y-axis limits in the actual difference plots are set to the mean AMA value. AMA, aortic microcalcification activity; CR, coefficient of reproducibility; ICC, intraclass correlation coefficient; LOA, limits of agreement; TBR, tissue-to-background ratio