Largest Ever Waterbirth Study

Examining 17,500+ waterbirths

Matched control of 17,500+ land births

Key findings:

Waterbirth finds it is neither as harmful as some current guidelines suggest, nor as benign as some proponents claim.

Outcomes per 5000 women and birthing people who birth in water:

3 will develop a uterine infection.

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In the same 5000 women and birthing people who birth in water, expect:

  • 30 fewer postpartum hemorrhages
  • 4 fewer severe perineal lacerations
  • 14 fewer hospital admissions in the first 6 weeks
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Outcomes per 5000 infants born underwater:

10 will have an umbilical cord avulsion.

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In the same 5000 neonates born in water, expect:

  • 6 fewer cases of respiratory distress syndrome
  • 10 fewer hospital admissions in the first 6 wk
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Importantly, there was no difference in the number of neonatal deaths between babies born underwater and those born on land.

Citation:

Bovbjerg, M.L., Cheyney, M. and Caughey, A.B. (2021), Maternal and neonatal outcomes following waterbirth: a cohort study of 17,530 waterbirths and 17,530 propensity score-matched land births. BJOG: An International Journal of Obstetrics & Gynaecology. Accepted Author Manuscript. doi.org/10.1111/1471-0528.17009

Help share the findings

Grand Rounds Available

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Study authors are available to provide Grand Rounds on the findings and clinical implications of this paper. Click below to start the scheduling process.