Accidental out-of-hospital delivery as an independent risk factor for perinatal mortality.

Objective: To determine maternal characteristics and perinatal outcomes of unattended out-of-hospital deliveries.

Study Design: A population-based study including all singleton deliveries between 1988 and 1999. Maternal characteristics and pregnancy outcomes of accidental out-of-hospital births were compared with those of women who delivered in the hospital. Multiple logistic regression analysis was performed to investigate independent risk factors for out-of-hospital deliveries. Another model was constructed to assess the independent risk of out-of-hospital delivery for perinatal mortality.

Results: The incidence of unattended, out-of-hospital deliveries was 2% (2,328/114,938). Multiparity, Bedouin ethnicity and lack of prenatal care were independently associated with out-of-hospital deliveries. Parturients who delivered out of hospital had a significantly lower rate of previous cesarean deliveries. Perinatal mortality was significantly higher among out-of-hospital deliveries, and those newborns were significantly more likely to be small for gestational age as compared to newborns with in-hospital births. In a multivariable model investigating risk factors for perinatal mortality, out-of-hospital delivery was an independent risk factor for perinatal mortality. Other significant risk factors were Bedouin ethnicity and lack of prenatal care.

Conclusion: Accidental out-of-hospital birth, associated with multiparity, Bedouin ethnicity and lack of prenatal care, is an independent risk factor for perinatal mortality.