Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Need for irrigation (syringing)
Systematic review	106 people Data from 1 RCT	Proportion of people not requiring syringing 26% with arachis oil/almond oil/rectified camphor oil (oil base)-based softener 11% with arachis oil/chlorobutol/p-dichlorobenzene (oil base)-based softener Absolute numbers not reported	OR 2.8 95% CI 1.0 to 8.0	Moderate effect size	arachis oil/almond oil/rectified camphor oil-based softener