title: Monitoring the prevalence of severe intellectual disability in children across Europe: feasibility of a common database.
abstract: OBJECTIVE
  Our aim was to study the feasibility of creating a framework for monitoring and undertaking collaborative research on intellectual disability at the European level, based on existing databases of children with such disability.
  
  
  METHODS
  The characteristics of five existing European intellectual disability databases from four countries (Iceland, Latvia, Ireland, and two in France), were discussed on the basis of ideal criteria set by a working group on childhood intellectual disability as part of the Surveillance of Cerebral Palsy in Europe Network (SCPE-NET). Mean prevalence values for severe intellectual disability for the birth years 1990 till 2002 were compared across databases.
  
  
  RESULTS
  Methods of case recruitment and diagnosis differed across databases, but classification of intellectual disability and completeness were similar. Severe intellectual disability (IQ<50) prevalence estimates were significantly (p<0.001) different across databases (south-east France: 3.3 out of 1000; south-west France: 3.0 out of 1000; Latvia: 3.9 out of 1000; Ireland: 5.0 out of 1000; and Iceland 5.1 out of 1000).
  
  
  CONCLUSIONS
  In spite of differences in diagnosis and case inclusion across databases, the construction of a common database for severe intellectual disability was deemed feasible through harmonization of certain criteria, such as age, and through restriction to those with severe intellectual disability.
authors.affiliation: Register for Severely Disabled Children and Perinatal Observatory (RHEOP), Grenoble, France.
authors.forename: Marit
authors.initials: M
authors.lastname: van Bakel
authors.forename: Ingolfur
authors.initials: I
authors.lastname: Einarsson
authors.forename: Catherine
authors.initials: C
authors.lastname: Arnaud
authors.forename: Sarah
authors.initials: S
authors.lastname: Craig
authors.forename: Susan I
authors.initials: SI
authors.lastname: Michelsen
authors.forename: Santa
authors.initials: S
authors.lastname: Pildava
authors.forename: Peter
authors.initials: P
authors.lastname: Uldall
authors.forename: Christine
authors.initials: C
authors.lastname: Cans
mesh_terms: D016208:Databases, Factual / Q000706:statistics & numerical data; D062665:Epidemiological Monitoring; D005060:Europe / Q000453:epidemiology; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000175:diagnosis* / Q000453:epidemiology*; D007361:Intelligence Tests; D008297:Male; D015995:Prevalence