Higher dose vitamin K showed no clear difference in bleeding complications: 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 intraventricular hemorrhage > Grade II: 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 presence of PIVKA II at day 5: 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 presence of PIVKA II at day 25: 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 necrotizing enterocolitis: 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 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).