Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Cure rate
RCT 3-armed trial	213 adults in primary care with any severity of diffuse acute otitis externa on otoscopy	Cure rate 21 days 40/65 (62%) with acetic acid 54/61 (89%) with triamcinolone–acetic acid	OR 4.8 95% CI 1.9 to 12.3 OR for corticosteroid–acetic acid versus acetic acid	Moderate effect size	triamcinolone–acetic acid