Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Adverse effects
RCT 3-armed trial	198 children (3 months–5 years) with Westley Croup Score 2–7 (see table 1 ) In review	Adverse effects (any) with oral dexamethasone with nebulised budesonide with nebulised budesonide plus dexamethasone	The RCT reported on adverse effects in 4 children (see Further information on studies)