About The Study: In this study, risks of severe neonatal morbidity or mortality increased with an increasing number of preexisting maternal chronic conditions. These findings suggest that women and adolescents with multiple chronic conditions may benefit from preconception counseling to optimize chronic disease management, monitoring in pregnancy for earlier identification of complications, and enhanced newborn supports.
Corresponding Author: To contact the corresponding author, Hilary K. Brown, PhD, email hk.brown@utoronto.ca .
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(doi:10.1001/jamanetworkopen.2025.55558)
Editor’s Note: Please see the article for additional information, including other authors, author contributions and affiliations, conflict of interest and financial disclosures, and funding and support.
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