Abstract
Objective:
The objective of the study was to evaluate the association between neonatal abstinence syndrome (NAS) and long-term childhood morbidity and infant mortality.
Study Design:
We conducted a cohort study of infants born in Washington State during 1990 to 2008 who were diagnosed with NAS (n=1900) or were unexposed (n=12,283, frequency matched by birth year). 5-year hospital readmissions and infant mortality were ascertained.
Results:
Children with history of NAS had increased risk of readmission during the first 5 years of life relative to unexposed children; this remained statistically significant after adjustment for maternal age, maternal education, gestational age and intrapartum smoking status (readmission rates: NAS=21.3%, unexposed=12.7%, adjusted relative risk (aRR) 1.54, 95% confidence interval (CI) 1.37 to 1.73). NAS was associated with increased unadjusted infant mortality risk, but this did not persist after adjustment (aRR 1.94, 95% CI 0.99 to 3.80).
Conclusion:
The observed increased risk for childhood hospital readmission following NAS diagnosis argues for development of early childhood interventions to prevent morbidity.
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Acknowledgements
We sincerely thank Seth Rowley for programming and data management; Alyson Littman for methodologic guidance; and the Washington State Department of Health for data access. Dr Witt receives funding support from the National Institute of Health, Institute of Child Health and Human Development (2T32HD057822-06); Principal Investigators: Dr Rivara and Dr Vavilala.
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Witt, C., Rudd, K., Bhatraju, P. et al. Neonatal abstinence syndrome and early childhood morbidity and mortality in Washington state: a retrospective cohort study. J Perinatol 37, 1124–1129 (2017). https://doi.org/10.1038/jp.2017.106
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DOI: https://doi.org/10.1038/jp.2017.106
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