It is very uncertain whether summary of findings table ‐ Vitamin B12 supplementation changes maternal anaemia compared with placebo/no vitamin B12 supplementation (very low certainty).
It is very uncertain whether summary of findings table ‐ Vitamin B12 supplementation changes maternal vitamin B12 deficiency compared with placebo/no vitamin B12 supplementation (very low certainty).
Summary of findings table ‐ Vitamin B12 supplementation showed no clear difference in low birthweight (< 2500 g) compared with placebo/no vitamin B12 supplementation (low certainty).
Summary of findings table ‐ Vitamin B12 supplementation showed no clear difference in preterm birth (< 37 weeks) compared with placebo/no vitamin B12 supplementation (low certainty).
The review found no eligible studies for this question.
Summary of findings table ‐ Any psychosocial intervention may leads to higher number of continuously abstinent women ‐ total compared with treatment (low certainty).
Summary of findings table ‐ Any psychosocial intervention showed no clear difference in number of women who completed treatment ‐ total compared with treatment (moderate certainty).
The review found no eligible studies for this question.
The review found no eligible studies for this question.
Respiratory syncytial virus vaccine leads to lower infant hospitalisation with laboratory‐confirmed RSV disease compared with placebo (high certainty).
The review found no eligible studies for this question.
Respiratory syncytial virus vaccine showed no clear difference in intrauterine growth restriction compared with placebo (moderate certainty).
Respiratory syncytial virus vaccine showed no clear difference in stillbirth compared with placebo (low certainty).
Respiratory syncytial virus vaccine showed no clear difference in maternal death compared with placebo (low certainty).
It is very uncertain whether respiratory syncytial virus vaccine changes preterm birth compared with placebo (very low certainty).
Respiratory syncytial virus vaccine showed no clear difference in congenital abnormalities compared with placebo (high certainty).