Background: In nonmalaria regions, iron/folic acid supplementation during pregnancy protects newborns against preterm delivery and early neonatal death. Other studies from malaria-endemic areas have reported an adverse effect of iron supplements on malaria prevalence in pregnant women. Objective: We examined the association between iron/folic acid supplements and prenatal antimalaria prophylaxis on neonatal mortality in malaria-endemic countries of sub-Saharan Africa. Design: This...