title: The prevalence of mental health problems in children 1(1/2) years of age - the Copenhagen Child Cohort 2000.
abstract: BACKGROUND
  The Copenhagen Child Cohort, CCC 2000, was established to investigate developmental psychopathology prospectively from birth in a general population.
  
  
  METHODS
  A random sample of 211 children from the CCC 2000 was investigated when the children were 1(1/2) years of age. The prevalence and associates of mental health problems and psychopathology were studied by clinical and standardised strategies, including videotape recordings, parent interviews and the following instruments: The Child Behavior Check List 1(1/2)-5 (CBCL 1(1/2)-5), The Infant Toddler Symptom Check List (ITSCL), Checklist for Autism in Toddlers (CHAT), Bayley Scales of Infant Development II (BSID II), The Parent Child Early Relationship Assessment (PC ERA) and Parent Infant Relationship Global Assessment Scale (PIR-GAS).
  
  
  RESULTS
  Mental health problems according to International Classification of Diseases (ICD-10) and Diagnostic Classification Zero to Three (DC 0-3) diagnoses were found in 16-18% of 1(1/2)-year-old children. Most common were disturbances of emotion, behaviour and eating and the DC 0-3 diagnosis of regulatory disorder. Parent-child relationship disturbances were found in 8%. High psychosocial risk was significantly associated with emotional and behavioural disorders (OR 3.1 95% (1.2-8.1)) and disturbed parent-child relationship (OR 5.0 95% (1.6-16.0)). The strongest association of risk was found between relationship disorders and emotional and behavioural disorders (OR 11.6 95% (3.8-37.5)).
  
  
  CONCLUSIONS
  The prevalence and distribution of psychopathology in 1(1/2)-year-old children seem to correspond to the distributions among older children. Disturbances in parent-child relationship have a key position in the risk mechanisms in early child psychopathology.
authors.affiliation: Child and Adolescent Psychiatric Centre, University Hospital of Copenhagen, Glostrup, Denmark. ames@glostruphosp.kbhamt.dk
authors.forename: Anne Mette
authors.initials: AM
authors.lastname: Skovgaard
authors.forename: Tine
authors.initials: T
authors.lastname: Houmann
authors.forename: Eva
authors.initials: E
authors.lastname: Christiansen
authors.forename: Susanne
authors.initials: S
authors.lastname: Landorph
authors.forename: Torben
authors.initials: T
authors.lastname: Jørgensen
authors.forename: E M
authors.initials: EM
authors.lastname: Olsen
authors.forename: K
authors.initials: K
authors.lastname: Heering
authors.forename: S
authors.initials: S
authors.lastname: Kaas-Nielsen
authors.forename: V
authors.initials: V
authors.lastname: Samberg
authors.forename: A
authors.initials: A
authors.lastname: Lichtenberg
mesh_terms: D002391:Catchment Area, Health; D015331:Cohort Studies; D003718:Denmark / Q000453:epidemiology; D005260:Female; D005500:Follow-Up Studies; D006801:Humans; D007223:Infant; D038801:International Classification of Diseases; D008297:Male; D001523:Mental Disorders / Q000175:diagnosis / Q000453:epidemiology* / Q000523:psychology; D015995:Prevalence; D012720:Severity of Illness Index; D011795:Surveys and Questionnaires; D014743:Videotape Recording