The prevalence of ADHD, ODD, depression, and anxiety in a community sample of 4-year-olds

John V. Lavigne, Susan A. LeBailly, Joyce Hopkins, Karen R. Gouze, Helen J. Binns

Research output: Contribution to journalArticlepeer-review

237 Scopus citations


Few studies have examined the epidemiology of preschoolers' psychopathology. This study included 796 4-year-old children recruited from schools and pediatric practices in a diverse, urban area. Psychiatric disorder was assessed by a structured interview adapted for preschool children and by questionnaire. The most common disorders were oppositional defiant disorder (ODD) and attention deficit hyperactivity disorder (ADHD). Generalized anxiety disorder (GAD) and depressive disorders were reported in less than 1% of the sample. Race/ethnicity differences were not significant. Gender differences showed ADHD-inattentive type more common among boys, with no gender differences for GAD, major depressive disorder, dysthymia, separation anxiety disorder, or ODD at any level of impairment. The overall comorbidity rate was 6.4%. Approximately 3% of individuals receiving a diagnosis had received mental health services.

Original languageEnglish (US)
Pages (from-to)315-328
Number of pages14
JournalJournal of Clinical Child and Adolescent Psychology
Issue number3
StatePublished - May 2009

ASJC Scopus subject areas

  • Developmental and Educational Psychology
  • Clinical Psychology

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