Fig. 3From: Early versus late awake prone positioning in non-intubated patients with COVID-19Oxygenation Response Assessment using ROX index during first prone session. ROX was recorded 5Â min before and 30Â min after APP. ROX index values are presented as median with 95% confidence interval. (APP, awake prone positioning; ROX index represents SpO2/FiO2 ratio divided by respiratory rate)Back to article page