BiPAP	Bilevel Positive Airway Pressure
CAS	Clinical Asthma Score
CI	Confidence Interval
CPAP	Continuous Positive Airway Pressure
ED	Emergency Department
EPAP	Expiratory Positive Airway Pressure
GRADE	Grading of Recommendations, Assessment, Development and Evaluations
GMR	Geometric Mean Ratio
HFNC	High-Flow Nasal Cannula
HR	Heart Rate
IMV	Invasive Mechanical Ventilation
IQR	Interquartile Range
LOS	Length of Stay
MD	Mean Difference
NIV	Non-Invasive Ventilation
NMA	Network Meta-Analysis
OR	Odds Ratio
PICU	Pediatric Intensive Care Unit
PIS	Pulmonary Index Score
PS	Pulmonary Score
PRISMA	Preferred Reporting Items for Systematic Reviews and Meta-Analyses
RCT	Randomized Controlled Trial
REML	Restricted Maximum