| Key question 1 | Key question 2 | Key question 3 |
---|---|---|---|
Participants | Neonates | ||
Intervention | Vitamin K supplement | Oral vitamin K supplement | Multiple doses of vitamin K supplement |
Comparison | Placebo or no vitamin K supplement | Parenteral vitamin K supplement | Single dose of vitamin K |
Outcome | HDN or VKDB | ||
Adverse effects | Any adverse effect |