Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Eradication rate
RCT	812 children and adults with head lice in 376 households	Proportion of people head-lice free 7 days 223/414 (54%) with malathion 332/397 (84%) with ivermectin	ARR –30% 95% CI –37% to –22% P <0.001	Effect size not calculated	ivermectin
RCT	812 children and adults with head lice in 376 households	Proportion of people head-lice free 14 days 352/414 (85%) with malathion 378/397 (95%) with ivermectin	ARR –10% 95% CI –16% to –5% P <0.001	Effect size not calculated	ivermectin