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Fig. 3 | Respiratory Research

Fig. 3

From: High-flow nasal oxygen vs. conventional oxygen therapy in patients with COVID-19 related acute hypoxemic respiratory failure and a do not intubate order: a multicentre cohort study

Fig. 3

Course of respiratory parameters between survivors and non-survivors. a Respiratory rate, b Oxygen saturation, c S/F ratio, d ROX index. Parameters are depicted as Boxplot, p-values: Mann–Whitney U-test for continuous variables and Chi-square test for categorical variables. * represent p-values < 0.05, ** represent p-values < 0.001. T time point, prior prior to HFNO initiation, Q quartile, IQR interquartile range, S/F ratio SpO2/FiO2 ratio, ROX index respiratory oxygenation index (SpO2/FiO2/respiratory rate)

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