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Updated: Jul 17, 2025

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Prenatal Exposure to Opioids and Neurodevelopmental Disorders in Children: A Bayesian Mediation Analysis

Shuang Wang, Gavino Puggioni, Jing Wu

    American Journal of Epidemiology
    |September 6, 2023
    PubMed

    Insights

    Prenatal opioid exposure is linked to faster neurodevelopmental disorder (NDD) diagnoses in children. Adverse pregnancy and birth outcomes significantly mediate this association, especially with later exposure during pregnancy.

    Area of Science:

    • Perinatal Epidemiology
    • Developmental Neuroscience
    • Public Health

    Background:

    • Prenatal opioid exposure is a growing concern with potential long-term effects on child neurodevelopment.
    • Understanding the pathways through which opioid exposure impacts neurodevelopmental disorders (NDDs) is crucial for intervention.

    Purpose of the Study:

    • To investigate the natural direct and joint natural indirect effects (JNIE) of prenatal opioid exposure on NDDs.
    • To examine mediation through pregnancy complications, congenital malformations, and adverse neonatal outcomes.

    Main Methods:

    • Utilized Medicaid claims linked to vital statistics in Rhode Island (2008-2018).
    • Employed Bayesian mediation analysis with elastic net shrinkage prior and Markov chain Monte Carlo algorithms.
    • Analyzed data from 11,176 pregnancies, identifying those with prescription opioid dispensations.

    Main Results:

    • Significant JNIE of opioid exposure on accelerated NDD diagnosis was observed across all trimesters.
    • JNIE proportions were 17.9% (T1), 22.4% (T2), and 56.3% (T3), indicating increasing mediation with later exposure.
    • Opioid exposure during pregnancy significantly increased the risk of NDD diagnosis in children.

    Conclusions:

    • Adverse pregnancy and birth outcomes jointly mediate the link between prenatal opioid exposure and accelerated NDD diagnosis.
    • The proportion of mediation through these adverse outcomes increases as opioid exposure timing approaches delivery.

    Keywords:
    causal inferenceelastic netneurodevelopmental disorder diagnosisretrospective study

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