Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Hospital admission rate
Systematic review	252 children presenting with croup (Westley Croup Score 2 or greater) 3 RCTs in this analysis	Return visits and/or (re-)admissions 12/128 (10%) with oral dexamethasone 9/124 (8%) with oral dexamethasone plus nebulised budesonide	RR 0.87 95% CI 0.41 to 1.85 P = 0.72		Not significant
Duration of hospital stay
RCT	72 children aged at least 3 months with stridor and chest wall retractions at rest admitted to hospital In review	Duration of hospital stay with oral dexamethasone with nebulised budesonide plus dexamethasone Absolute results reported graphically	RR 1.3 95% CI 0.82 to 2.1		Not significant