Comparison 1. Vitamin A supplementation versus no vitamin A supplementation.

Outcome or subgroup title	No. of studies	No. of participants	Statistical method	Effect size
1 HIV infection status of the child	5	4428	Risk Ratio (M‐H, Random, 95% CI)	1.07 [0.91, 1.26]
1.1 Antepartum supplementation	2	650	Risk Ratio (M‐H, Random, 95% CI)	0.85 [0.67, 1.09]
1.2 Postpartum supplementation	1	2248	Risk Ratio (M‐H, Random, 95% CI)	1.11 [0.98, 1.27]
1.3 Antepartum and postpartum supplementation	2	1530	Risk Ratio (M‐H, Random, 95% CI)	1.17 [0.86, 1.59]
2 Mean birthweight	3	2181	Mean Difference (IV, Random, 95% CI)	34.12 [‐12.79, 81.02]
3 Low birthweight	3	1819	Risk Ratio (M‐H, Random, 95% CI)	0.78 [0.63, 0.97]
4 Child death by two years of age	3	3883	Risk Ratio (M‐H, Random, 95% CI)	1.06 [0.92, 1.22]
5 Preterm delivery	2	1577	Risk Ratio (M‐H, Random, 95% CI)	0.84 [0.52, 1.37]
6 Stillbirth	3	2335	Risk Ratio (M‐H, Random, 95% CI)	1.13 [0.72, 1.77]
7 Maternal death	2	1267	Risk Ratio (M‐H, Random, 95% CI)	0.71 [0.35, 1.43]
8 Postpartum CD4 count	1	511	Mean Difference (IV, Random, 95% CI)	‐13.0 [‐60.46, 34.46]