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?:abstract
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RATIONALE: Oxygen saturation to fraction of inspired oxygen ratio (SpO(2)/FiO(2)) has been described as potential predictor of poor outcome for COVID-19, without considering its time-varying behavior though. METHODS: Prognostic value of SpO(2)/FiO(2) was evaluated by jointly modeling the longitudinal responses of SpO(2)/FiO(2) and time-to-event data retrieved from 280 severe and critically ill (intensive care) patients with COVID-19. RESULTS: A sharply decrease of SpO(2)/FiO(2) from the first to second measurement for non-survivors was observed, and a strong association between square root SpO(2)/FiO(2) and mortality risk was demonstrated, with a unit decrease in the marker corresponding to 1.82-fold increase in mortality risk (95% CI: 1.56–2.13). CONCLUSIONS: The current study suggested that SpO(2)/FiO(2) could serve as a non-invasive prognostic marker to facilitate early adjustment for treatment, thus improving overall survival.
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?:doi
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10.1186/s12931-020-01455-4
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document_parses/pdf_json/377a8977384cfa3d8e775e8067e377b6bb4ea36c.json
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document_parses/pmc_json/PMC7374662.xml.json
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?:title
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Continuously available ratio of SpO(2)/FiO(2) serves as a noninvasive prognostic marker for intensive care patients with COVID-19
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