Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Hospital admission rate
RCT 3-armed trial	198 children (3 months–5 years) with Westley Croup Score 2–7 (see table 1 ) In review	Proportion of children admitted to hospital 1 week 1/68 (1%) with oral dexamethasone 0/65 (0%) with nebulised budesonide	RD +0.01 95% CI –0.03 to +0.05		Not significant
RCT 3-armed trial	80 children (5 months–13 years) evaluated in an emergency department with croup, with Westley Croup Score 3 or greater (range not reported) In review	Proportion of children admitted to hospital 24 hours 2/23 (9%) with oral dexamethasone 5/27 (19%) with nebulised budesonide	ARR +10% 95% CI –9% to +28%		Not significant