Higher dose vitamin K showed no clear difference in sepsis: 0.2 mg IM versus 0.5 mg IM compared with lower dose vitamin K (low certainty).
Higher dose vitamin K showed no clear difference in mortality (all infants): 0.2 mg IM versus 0.5 mg IM compared with lower dose vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in bleeding complications: 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in necrotizing enterocolitis: 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in sepsis: 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in sepsis: 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in mortality (all infants): 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in mortality (all infants): 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in bleeding complications: 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in intraventricular hemorrhage > Grade II: 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in intraventricular hemorrhage > Grade II: 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in presence of PIVKA II at day 5: 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in presence of PIVKA II at day 5: 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in presence of PIVKA II at day 25: 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in presence of PIVKA II at day 25 ‐ 0.2 mg IV versus 0.5 mg IM compared with intravenous vitamin K (low certainty).
Intramuscular vitamin K showed no clear difference in necrotizing enterocolitis ‐ 0.2 mg IV versus 0.2 mg IM compared with intravenous vitamin K (low certainty).
Pyridoxal 5 phosphate (vitamin B6) showed no clear difference in global: Discontinuation of Vitamin B6 compared with placebo (low certainty).
Any vitamin E supplementation showed no clear difference in stillbirth compared with placebo, no placebo or other supplements (moderate certainty).
Any vitamin E supplementation showed no clear difference in preterm birth (less than 37 weeks' gestation) compared with placebo, no placebo or other supplements (high certainty).
Any vitamin E supplementation showed no clear difference in clinical pre‐eclampsia (random‐effects model) compared with placebo, no placebo or other supplements (moderate certainty).