ADHD Diagnoses Up with DSM-5 Age Criteria

The study aims to compare the prevalence and clinical correlates of DSM-IV versus DSM-5–defined attention deficit hyperactivity disorder (ADHD) and subtypes in a nationally representative sample of US youth based on the age-of-onset criterion.

The comparability of the clinical significance of the early and later age-of-onset groups supports the DSM-5 extension of the age-of-onset criterion in ADHD.

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