title: The predictors of persistent DSM-IV disorders in 3-year follow-ups of the British Child and Adolescent Mental Health Surveys 1999 and 2004.
abstract: BACKGROUND
  The identification of the factors that influence the persistence of psychiatric disorder may assist practitioners to focus on young people who are particularly prone to poor outcomes, but population-based samples of sufficient size are rare.
  
  
  METHODS
  This secondary analysis combined data from two large, population-based cross-sectional surveys in Great Britain (1999 and 2004) and their respective follow-ups (2002 and 2007), to study homotypic persistence among the 998 school-age children with psychiatric disorder at baseline. Psychiatric disorder was measured using the Development and Well-Being Assessment applying DSM-IV criteria. Factors relating to the child, family, and the severity and type of psychopathology at baseline were analysed using logistic regression.
  
  
  RESULTS
  Approximately 50% of children with at least one psychiatric disorder were assigned the same diagnostic grouping at 3-year follow-up. Persistent attention-deficit/hyperactivity disorder and anxiety were predicted by poor peer relationship scores. Persistent conduct disorder was predicted by intellectual disability, rented housing, large family size, poor family function and by severer baseline psychopathology scores.
  
  
  CONCLUSIONS
  Homotypic persistence was predicted by different factors for different groups of psychiatric disorders. Experimental research in clinical samples should explore whether these factors also influence response to interventions.
authors.affiliation: University of Exeter Medical School,Exeter,Devon,UK.
authors.forename: T
authors.initials: T
authors.lastname: Ford
authors.affiliation: King's College London,Institute of Psychiatry,London,UK.
authors.forename: F
authors.initials: F
authors.lastname: Macdiarmid
authors.affiliation: University of Exeter Medical School,Exeter,Devon,UK.
authors.forename: A E
authors.initials: AE
authors.lastname: Russell
authors.affiliation: University of Exeter Medical School,Exeter,Devon,UK.
authors.forename: D
authors.initials: D
authors.lastname: Racey
authors.affiliation: King's College London,Institute of Psychiatry,London,UK.
authors.forename: R
authors.initials: R
authors.lastname: Goodman
mesh_terms: D000293:Adolescent; D002648:Child; D039721:Diagnostic and Statistical Manual of Mental Disorders; D005260:Female; D005500:Follow-Up Studies; D006306:Health Surveys; D006801:Humans; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis* / Q000453:epidemiology*; D006113:United Kingdom / Q000453:epidemiology
keywords: Anxiety; attention-deficit/hyperactivity disorder; conduct disorder; depression; psychiatric disorders