ARDS	Acute Respiratory Distress Syndrome
ASB	Assisted Spontaneous Breathing
AUROC	Area Under the Receiver Operating Characteristic Curve
BiPAP	Bilevel Positive Airway Pressure
CI	Confidence Interval
CMV	Controlled Mechanical Ventilation
COVID-19	Coronavirus Disease 2019
CPAP	Continuous Positive Airway Pressure
DIVI	German Interdisciplinary Association for Intensive and Emergency Medicine (Deutsche Interdisziplinäre Vereinigung für Intensiv-und Notfallmedizin)
ECMO	Extracorporeal Membrane Oxygenation
FiO2	Fraction of Inspired Oxygen
GCS	Glasgow Coma Scale
ICU	Intensive Care Unit
ITW	Intensive Care Transport Vehicle (Intensivtransportwagen)
MAP	Mean Arterial Pressure
OR	Odds Ratio
PaO2	Partial Pressure of Arterial Oxygen
PCV	Pressure-Controlled Ventilation
PEEP	Positive End-Expiratory Pressure
P/F ratio	Ratio of Arterial Oxygen Partial Pressure to Fraction of Inspired Oxygen (PaO2/FiO2)
SARS-CoV-2	Severe Acute Respiratory Syndrome Coronavirus 2
SpO2	Peripheral Oxygen Saturation
SPSS	Statistical Package for the Social Sciences
VV-ECMO	Veno-Venous Extracorporeal Membrane Oxygenation