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Two Million Birth Records Measured a Small Refusal's Cost
Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.
Summary
Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.
A Swedish registry study followed more than two million infants born from 2003 through 2021. Among 24,089 without a recorded intramuscular vitamin K dose, the odds of any bleeding diagnosis by six months were about 1.5 times higher and intracranial bleeding odds nearly three times higher. Nonreceipt remained uncommon but more than doubled over the period. The observational design measures association and records, not every parent's reasons or perfect dose adherence.
Why it matters
Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.
Limits and context
- The observational design measures association and records, not every parent's reasons or perfect dose adherence.
Key claims
Swedish infants without a recorded vitamin K injection had higher odds of bleeding, including intracranial hemorrhage.
Qualification: The observational design measures association and records, not every parent's reasons or perfect dose adherence.
Evidence: source-2026-08-02-010
Sources
- JAMA Pediatrics: vitamin K prophylaxis and infant bleedingJAMA Pediatrics · secondary reporting
Corrections
No corrections have been recorded for this story.