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  1. ADHD in a school sample of Brazilian adolescents : A study of prevalence, comorbid conditions, and impairments.

    Article - En anglais


    To evaluate the prevalence, comorbid conditions, and impairments of attention-deficit/hyperactivi disorder (ADHD) among young adolescents in Porto Alegre, Brazil.


    1,013 students aged 12 to 14 years were evaluated at 64 state schools, using a screening instrument based on the 18 DSM-IV ADHD symptoms.

    All positive screened students (n=99) and a random subset of negative screened subjects (n=92) had a psychiatric evaluation carried out within a hospital setting or at home.


    The prevalence of ADHD was estimated to be 5.8% (95% confidence interval=3.2-10.6), and the comorbidity with other disruptive behavior disorders was high (47.8%). Youths with ADHD (n=23) had significantly higher rates of school repetitions, suspensions, and expulsions (p<. 01) than controls (n=168).

    No association was identified between ADHD and alcohol, marijuana, and inhalant use.


    The results extend to adolescents well-documented findings in children, indicating that ADHD is quite prevalent in early adolescence and affected youths are at high risk for impairment and dysfunction in multiple domains.

    Mots-clés Pascal : Trouble attention, Hyperactivité, Prévalence, Association morbide, Trouble psychiatrique, Brésil, Amérique du Sud, Amérique, Epidémiologie, Age scolaire, Enfant, Homme

    Mots-clés Pascal anglais : Attentional disorder, Hyperactivity, Prevalence, Concomitant disease, Mental disorder, Brazil, South America, America, Epidemiology, School age, Child, Human

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 99-0333746

    Code Inist : 002B18D05. Création : 16/11/1999.