CONFERENCE PROCEEDING
Outcomes associated with planned place of birth among midwife and physician attended low-risk pregnancies in Ontario, Canada (2012-2021): A population-based propensity score weighted cohort study
 
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1
McMaster University, McMaster Midwifery Research Centre, Hamilton, Canada
 
2
McMaster University, Obstetrics & Gynecology, Hamilton, Canada
 
3
ICES, ICES McMaster, Hamilton, Canada
 
 
Eur J Midwifery 2026;10(Supplement 1):A259
 
ABSTRACT
BACKGROUND:
Client characteristics and provider and contextual factors that influence home birth outcomes may vary over time, so it is important to update research about home birth outcomes.

OBJECTIVES:
We compared the risk of (1) neonatal morbidity and mortality, and (2) maternal outcomes and birth interventions, between planned home birth with a midwife, planned hospital birth with a midwife, and planned hospital birth with a physician.

METHODS:
Using prospectively collected provincial perinatal registry data linked to other administrative health data, we conducted a population-based retrospective cohort study of Ontario residents with a low-risk pregnancy who gave birth between April 1, 2012, and March 31, 2021. The primary outcome was a composite binary outcome of severe neonatal morbidity or mortality (SNMM). We used propensity score overlap weighting to minimize the impact of selection bias and modified Poisson regression to conduct multivariate analyses. Ethical approval was obtained.

RESULTS:
The cohort included 280,487 births, of which 9583 were planned homebirths. For nulliparas, compared to physician-attended hospital birth, the relative risk of SNMM was 0.88 (95% CI: 0.72-1.07) for planned home births, and 0.91 (95% CI: 0.82-1.01) for planned hospital births with a midwife. For parous people with no previous cesarean birth, compared to physician-attended hospital birth, the relative risk of SNMM was 0.62 (95% CI: 0.49-0.79) for planned home births, and 0.78 (95% CI: 0.68-0.90) for planned hospital births with a midwife. For parous people with a prior cesarean birth, compared to physician-attended hospital birth, the relative risk of SNMM was 1.37 (95% CI: 0.79-2.59) for planned home births, and 0.94 (95% CI: 0.65-1.35) for planned hospital births with a midwife. Maternal outcomes will also be shared.

CONCLUSIONS:
Planned home birth continues to be a safe option for low-risk pregnancies in Ontario, Canada.

KEY MESSAGE:
Our updated home birth clinical outcome and intervention findings can inform policy and clinical decision-making. Place of birth - homebirth (including three-minute presentation competition)
eISSN:2585-2906
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