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. 2023 Jul 14;13:64. doi: 10.1186/s13613-023-01161-6

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© The Author(s) 2023

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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Fig. 2 — A 28-day survival and B cumulative incidence of liberation of respiratory support in patients receiving HFNO compared to patients receiving ventilation. For survival the adjusted hazard ratio is shown. A shows survival in the first 28 days, and B shows survival until the day of extubation. The cumulative incidence of liberation from respiratory support is shown as unadjusted hazard ratio with center as random effect. CI confidence interval, HFNO high-flow nasal oxygen, HR hazard ratio