Comparison 15. Prolonged feeding: extensively hydrolysed whey formula versus cow's milk formula.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 All allergic disease	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Infancy (incidence)	1	972	Risk Ratio (M‐H, Fixed, 95% CI)	0.97 [0.71, 1.34]
1.2 Childhood (incidence)	1	431	Risk Ratio (M‐H, Fixed, 95% CI)	1.07 [0.82, 1.38]
2 Asthma	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Childhood (prevalence)	1	431	Risk Ratio (M‐H, Fixed, 95% CI)	1.19 [0.73, 1.94]
3 Eczema	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Infancy (incidence)	1	972	Risk Ratio (M‐H, Fixed, 95% CI)	1.00 [0.72, 1.40]
3.2 Childhood (incidence)	1	431	Risk Ratio (M‐H, Fixed, 95% CI)	1.06 [0.75, 1.49]
3.3 Childhood (prevalence)	1	431	Risk Ratio (M‐H, Fixed, 95% CI)	0.78 [0.46, 1.33]