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medRxiv PreprintsInternational11 October 2026

Association between Prenatal Adversity and Neonatal Outcomes in Infants with Prenatal Opioid Exposure

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Abstract Objective: Examine whether prenatal adversity is associated with Neonatal Opioid Withdrawal Syndrome (NOWS) severity and the need for pharmacological treatment in infants with prenatal opioid exposure. Study Design: Prospective cohort study of 235 infants from a multi-center study of infants with prenatal opioid exposure. Maternal factors were assessed using the electronic medical record and maternal questionnaires. Latent Class Analysis (LCA) was used to derive mutually exclusive prenatal adversity groups. Results: A 3-class LCA solution provided the best fit to the data and showed 3
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