Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Change in croup score
Systematic review	60 children (6 months–13 years) with moderate croup (Westley Croup Score 3 or greater) in an outpatient setting Data from 1 RCT	Mean between-group change from baseline in croup score 6 hours –2.23 with oral dexamethasone 0.6mg/kg (31 children) –2.52 with oral dexamethasone 0.3mg/kg (29 children)	SMD 0.21 95% CI –0.30 to +0.72 P = 0.42		Not significant
Systematic review	129 children (3 months–9 years) with moderate croup (Westley Croup Score 2 or greater) in an outpatient setting 2 RCTs in this analysis	Mean between-group change from baseline in croup score 6 hours with oral dexamethasone 0.6mg/kg (63 children) with oral dexamethasone 0.15mg/kg (66 children)	SMD –0.02 95% CI –0.37 to +0.32 P = 0.90		Not significant