Comparison 3. Multiple methods of breastfeeding support versus usual care: subgroup analysis by BMI category.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Exclusive breastfeeding at 4‐6 weeks	4	445	Risk Ratio (M‐H, Random, 95% CI)	1.21 [0.83, 1.77]
1.1 Trials recruiting women who were obese	2	244	Risk Ratio (M‐H, Random, 95% CI)	1.00 [0.45, 2.20]
1.2 Trials recruiting women who were overweight or obese	2	201	Risk Ratio (M‐H, Random, 95% CI)	1.42 [0.83, 2.42]
2 Any breastfeeding at 4‐6 weeks	2	103	Risk Ratio (M‐H, Random, 95% CI)	1.04 [0.57, 1.89]
2.1 Trials recruiting women who were obese	1	39	Risk Ratio (M‐H, Random, 95% CI)	0.76 [0.54, 1.07]
2.2 Trials recruiting women who were overweight or obese	1	64	Risk Ratio (M‐H, Random, 95% CI)	1.4 [1.04, 1.89]