title: [Attention-deficit hyperactivity disorder comorbidity in a school sample of children].
abstract: OBJECTIVE
  To evaluate the frequency of conduct disorder (CD), oppositional defiant disorder (ODD) and obsessive-compulsive disorder (OCD) in children with attention-deficit hyperactivity disorder (ADHD).
  
  
  METHODS
  This study was performed with children between 7 and 11 years old who fit the DSM-IV diagnostic criteria (n=35) to ADHD, normal neurologic examination and abnormal evolutionary neurological examination (ENE) by Lefèvre. Parents answered a questionnaire with DSM-IV criteria to ADHD and comorbidities.
  
  
  RESULTS
  ADHD combined subtype was the most prevalent (51.4%). Fourteen (40%) had CD, including two with both CD and OCD. Five (14.2%) had only ODD and one (2.8%) only OCD. Eleven of fourteen children (78.5%) with CD had also ADHD combined subtype, with significant statistical difference (p<0.05). Eleven of fifteen children (73.3%) without comorbidity had inattentive or hyperactive subtype (p<0.05).
  
  
  CONCLUSIONS
  The frequency of association between CD and ADHD was high, much more in combined subtype.
authors.affiliation: Serviço de Psiquiatria, Hospital das Clínicas de Porto Alegre. mariannepossa02@yahoo.com.br
authors.forename: Marianne de Aguiar
authors.initials: Mde A
authors.lastname: Possa
authors.forename: Lucas
authors.initials: L
authors.lastname: Spanemberg
authors.forename: Ana
authors.initials: A
authors.lastname: Guardiola
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000453:epidemiology*; D019958:Attention Deficit and Disruptive Behavior Disorders / Q000453:epidemiology; D002648:Child; D015897:Comorbidity; D019955:Conduct Disorder / Q000453:epidemiology*; D003430:Cross-Sectional Studies; D005260:Female; D006801:Humans; D008297:Male; D009771:Obsessive-Compulsive Disorder / Q000453:epidemiology*; D017678:Sex Distribution