title: The Child Attention-Deficit Hyperactivity Disorder Teacher Telephone Interview (CHATTI): reliability and validity.
abstract: BACKGROUND
  The ICD-10 and DSM-IV diagnostic criteria for hyperkinetic disorder and attention-deficit hyperactivity disorder (ADHD) require symptoms or impairment in two or more settings. Thus, information on children's symptoms in school is usually required. This paper presents the Child ADHD Teacher Telephone Interview (CHATTI), an instrument aimed at systematically obtaining this information.
  
  
  OBJECTIVE
  To examine the stability, test-retest reliability and criterion validity of the CHATTI for children referred with a suspected diagnosis of ADHD.
  
  
  METHODS
  Data were obtained from 79 teachers, of whom 36 were interviewed on two occasions.
  
  
  RESULTS
  Overall, the CHATTI shows good stability, test-retest reliability and criterion validity for symptom scores. Test-retest reliability for some individual items was low. Reliability for the operationalised criteria of 'pervasiveness' (i.e. symptoms at school and home) and 'school impairment' was excellent (kappa=1).
  
  
  CONCLUSIONS
  The CHATTI appears to be a promising tool for assessing ADHD symptoms in a school setting and could be useful in clinical as well as research settings.
authors.affiliation: Section of Child and Adolescent Psychiatry, Department of Psychological Medicine, University of Wales College of Medicine, Cardiff, UK.
authors.forename: Jane
authors.initials: J
authors.lastname: Holmes
authors.forename: Deborah
authors.initials: D
authors.lastname: Lawson
authors.forename: Kate
authors.initials: K
authors.lastname: Langley
authors.forename: Helen
authors.initials: H
authors.lastname: Fitzpatrick
authors.forename: Anne
authors.initials: A
authors.lastname: Trumper
authors.forename: Helen
authors.initials: H
authors.lastname: Pay
authors.forename: Richard
authors.initials: R
authors.lastname: Harrington
authors.forename: Anita
authors.initials: A
authors.lastname: Thapar
mesh_terms: D001289:Attention Deficit Disorder with Hyperactivity / Q000175:diagnosis*; D002648:Child; D006801:Humans; D007406:Interview, Psychological; D015588:Observer Variation; D011594:Psychometrics; D015203:Reproducibility of Results; D012574:Schools; D013663:Teaching