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. 2021 Apr 27;28(4):355–364. doi: 10.1007/s40292-021-00452-y

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© The Author(s) 2021

Open AccessThis article is licensed under a Creative Commons Attribution-NonCommercial 4.0 International License, which permits any non-commercial 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-nc/4.0/.

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Fig. 2 — Cox regression analysis, survival at the 100th day since the first positive viral RNA detection in both populations of patients (on statin therapy, ST =red curve vs. not on statin therapy, NST=blue curve) adjusted for age and CCI (Charlson Comorbidity Index). The red curve intercepts the blue curve in its first descending tract, but they take different directions after a longer observation time, resulting in two different survival functions