Comparison 2. Micronutrient or macronutrient supplementation in children versus no intervention or placebo.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 Length‐for‐age or height‐for‐age	3	2601	Mean Difference (IV, Fixed, 95% CI)	‐0.02 [‐0.06, 0.02]
2 Weight‐for‐age	4	2646	Mean Difference (IV, Fixed, 95% CI)	0.04 [‐0.01, 0.10]
3 Weight‐for‐height	3	2331	Mean Difference (IV, Fixed, 95% CI)	0.04 [‐0.01, 0.09]