Polygamy and birth outcomes among Bedouin women of the Negev: The contribution of social determinants and pregnancy complications.

Polygamy has been associated with adverse health outcomes. We examined the association between polygamy and adverse birth outcomes (composite score of preterm birth, low birth weight, small for gestational age, Apgar score < 7) using survey data linked to retrospective medical data of 9,872 cohort Bedouin women who bore live singletons in a large medical center in Southern Israel between 2008 and 2014. Women in polygamous marriages (18%) were more likely to have adverse birth outcomes after considering different factors (AOR = 1.28, 95% CI = 1.09-1.51), indicating that polygamy is an independent risk factor for birth outcomes that should be considered in research and clinical practice.