Comparison 14. Prolonged feeding: partially hydrolysed casein‐containing formula versus cow's milk formula.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 All allergic disease	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
1.1 Infancy (incidence)	1	91	Risk Ratio (M‐H, Fixed, 95% CI)	1.36 [0.80, 2.31]
1.2 Childhood (prevalence)	1	62	Risk Ratio (M‐H, Fixed, 95% CI)	1.76 [0.76, 4.09]
2 Asthma	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
2.1 Infancy (incidence)	1	91	Risk Ratio (M‐H, Fixed, 95% CI)	0.34 [0.07, 1.60]
2.2 Childhood (prevalence)	1	62	Risk Ratio (M‐H, Fixed, 95% CI)	2.20 [0.77, 6.26]
3 Eczema	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
3.1 Infancy (incidence)	1	91	Risk Ratio (M‐H, Fixed, 95% CI)	1.30 [0.66, 2.55]
3.2 Childhood (prevalence)	1	62	Risk Ratio (M‐H, Fixed, 95% CI)	0.29 [0.03, 2.66]
4 Rhinitis	2		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
4.1 Infancy (incidence)	1	91	Risk Ratio (M‐H, Fixed, 95% CI)	0.0 [0.0, 0.0]
4.2 Childhood (prevalence)	1	62	Risk Ratio (M‐H, Fixed, 95% CI)	1.32 [0.53, 3.26]
5 Food allergy	1		Risk Ratio (M‐H, Fixed, 95% CI)	Subtotals only
5.1 Infancy (incidence)	1	91	Risk Ratio (M‐H, Fixed, 95% CI)	2.56 [0.86, 7.56]