Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Wax removal
Systematic review	80 ears, number of people not reported Data from 1 RCT	Removal of wax (all or most of wax) 88% with triethanolamine polypeptide (water base)-based proprietary preparation (applied 30 minutes prior to syringing) 18% with carbamide peroxide (non-water, non-oil base)-based proprietary preparation Absolute results not reported	OR 33.0 95% CI 9.5 to 114.3	Large effect size	water-based proprietary preparation