title: The occurrence of inattention, hyperactivity, impulsivity and coexisting symptoms in a population study of 471 6-8-year old children based on the FTF (Five to Fifteen) questionnaire.
abstract: OBJECTIVE
  To study the usefulness of a new parent questionnaire and to evaluate the prevalence of inattention, hyperactivity, impulsivity and co-existing problems in a group of 6-8-year-old children.
  
  
  METHODS
  A questionnaire comprising 179 three-score-items including the DSM-IV diagnostic symptom criteria on AD/HD and questions on motor function, executive functions, perception, memory, language and speech, learning, social skills and psychiatric problems was used (5-15 questionnaire, FTF). The answers given by parents of 6-8-year-old children in a community in Finland are presented.
  
  
  RESULTS
  The answers for 471 children, 230 boys and 241 girls, revealed a significantly higher rate of problems for boys than for girls in all developmental domains. The number of children with scores exceeding the mean +2 SD for inattention and/or hyperactivity-impulsivity subdomains were 42. About an half of these children had many coexisting problems, when the 90(th) percentile score for each domain was used as a measurement. Of the 42 children 11 fulfilled the DSM-IV symptom list criteria (6/9 for inattention and/or hyperactivity-impulsivity) for AD/HD and 9 children for subthreshold (5/9) AD/HD.
  
  
  CONCLUSIONS
  A community-based study revealed that 2.3% of 6-8-year-old children had the full symptom list criteria (6/9) of AD/HD according to DSM-IV, and another 1.9 % fulfilled the symptom criteria (5/9) for subthreshold AD/HD. Coexisting problems were common. The severity of symptoms of inattentiveness and hyperactivity-impulsivity correlated significantly with the severity of coexisting problems.
authors.affiliation: Department of Paediatrics, University of Kuopio, P. O. Box 1627, 70211 Kuopio 21, Finland. Eila.Airaksinen@uku.fi
authors.forename: Eila M
authors.initials: EM
authors.lastname: Airaksinen
authors.forename: Katarina
authors.initials: K
authors.lastname: Michelsson
authors.forename: Veikko
authors.initials: V
authors.lastname: Jokela
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000150:complications / Q000453:epidemiology* / Q000523:psychology; D002648:Child; D015897:Comorbidity; D003430:Cross-Sectional Studies; D039721:Diagnostic and Statistical Manual of Mental Disorders; D007174:Disruptive, Impulse Control, and Conduct Disorders / Q000150:complications / Q000453:epidemiology* / Q000523:psychology; D016021:Epidemiologic Studies; D005260:Female; D006801:Humans; D008297:Male; D015995:Prevalence; D011569:Psychiatric Status Rating Scales; D012720:Severity of Illness Index