Ref (type)	Population	Outcome, Interventions	Results and statistical analysis	Effect size	Favours
Duration of crying
RCT	43 formula-fed infants (<6 months) with colic defined by Wessel's criteria	Reduction in crying from baseline (minutes/day) 7 days with whey hydrolysate formula with standard care (cow's milk formula) Absolute results not reported	Mean difference 63 minutes/day 95 % CI 1 to 127 minutes/day P = 0.05	Effect size not calculated	whey hydrolysate formula