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Gender differences in ADHD subtype comorbidity.

Florence Levy1, David A Hay, Kellie S Bennett

  • 1School of Psychiatry, University of New South Wales, Sydney, Australia. f.levy@unsw.edu.au

Journal of the American Academy of Child and Adolescent Psychiatry
|March 23, 2005
PubMed
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Gender differences in attention-deficit/hyperactivity disorder (ADHD) comorbidity reveal externalizing disorders are more common in males and internalizing disorders in females. Clinical approaches should address potential language and reading issues in all children with ADHD.

Area of Science:

  • Child and Adolescent Psychiatry
  • Neurodevelopmental Disorders
  • Behavioral Genetics

Background:

  • Attention-deficit/hyperactivity disorder (ADHD) is a common neurodevelopmental disorder.
  • Comorbidity with other disorders is frequent in children with ADHD.
  • Understanding gender differences in ADHD comorbidity is crucial for effective diagnosis and treatment.

Purpose of the Study:

  • To investigate gender-specific patterns of comorbidity between ADHD subtypes and other conditions in children.
  • To examine gender differences in the association between ADHD and oppositional defiant disorder, conduct disorder, separation anxiety disorder, generalized anxiety disorder, speech therapy, and remedial reading.

Main Methods:

  • Data from the Australian Twin ADHD Project (N = 4,371) were collected using mailed DSM-IV-based questionnaires.

Related Experiment Videos

  • Comorbidity patterns were analyzed across ADHD subtypes: inattentive, hyperactive/impulsive, and combined.
  • Statistical analyses, including analysis of variance, were used to identify gender and subtype differences.

    • Main Results:

    • Males with ADHD showed higher rates of oppositional defiant disorder and conduct disorder (externalizing).
    • Females with ADHD exhibited higher rates of separation anxiety disorder and generalized anxiety disorder (internalizing).
    • Children with the combined ADHD subtype had more comorbid symptoms, and ADHD subtypes were associated with internalizing disorders differently in females.

    Conclusions:

    • While ADHD subtypes influence comorbidity, significant gender differences in externalizing disorders were not found.
    • Inattentive girls may be more prone to anxiety, and clinical interventions should consider language and reading difficulties in all children with ADHD.