Adverse childhood experiences (ACEs) have been found to be important contributors to negative health outcomes throughout the lifespan. Birth to 5 years represent a critical period for brain development impacting cognitive, emotional, and social competencies. This study aims to determine the association between overall ACE score and risk of developmental, social, or behavioral delay in a sample of children ages 1-5 years from the National Survey of Children's Health (N = 21,139). Approximately 1 in 4 (27.3%) children were found to have moderate to high risk of developmental, social, or behavioral delays. A dose-response relationship was found between ACEs and risk of delay with results ranging from 24.2% among children with 0 ACEs to 42.2% among those with 4 or more ACEs. Additional ACEs increased risk of delay by 17%. (OR = 1.17, 95% CI = 1.09-1.25). The data currently supports a strong correlation between ACE score and risk of delay among children ages 1-5.

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