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. 2022 Aug 6;6:100071. doi: 10.1016/j.ibmed.2022.100071

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© 2022 The Authors

Since January 2020 Elsevier has created a COVID-19 resource centre with free information in English and Mandarin on the novel coronavirus COVID-19. The COVID-19 resource centre is hosted on Elsevier Connect, the company's public news and information website. Elsevier hereby grants permission to make all its COVID-19-related research that is available on the COVID-19 resource centre - including this research content - immediately available in PubMed Central and other publicly funded repositories, such as the WHO COVID database with rights for unrestricted research re-use and analyses in any form or by any means with acknowledgement of the original source. These permissions are granted for free by Elsevier for as long as the COVID-19 resource centre remains active.

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Fig. 2 — Cumulative distributions for F iO2 of the samples taken within 24 h before death (i.e. ‘event samples’) of patients from ICU O(N = 31), P(N = 13), R(N = 16) and X(N = 16). The cumulative distribution of event samples of patients from all ICUs (N = 667) is plotted as references. Distributions were found significantly different (P < 0.05) from the reference based on a two-sided Kolmogorov-Smirnov (KS) test in ICU O (KS-statistic = 0.32, P = 0.011), P (KS-statistic = 0.43, P = 0.012), R (KS-statistic = 0.46, P = 0.002) and X (KS-statistic = 0.33, P = 0.046).