Noninvasive ventilation use and ICU mortality in COVID-19-related acute respiratory failure: a retrospective cohort study
Highlights • NIV use increased from 2.4% to 77.8% across the two study periods.• Intubation rates remained high and did not differ significantly between periods.• Second-period patients had more severe hypoxemia and higher crude ICU mortality.• Absence of NIV use was associated with a lower adjusted hazard of ICU morta...