A1 Refereed original research article in a scientific journal
Prevalence of Autism Spectrum Disorder in 7-9-Year-Old Children in Denmark, Finland, France and Iceland: A Population-Based Registries Approach Within the ASDEU Project
Authors: M. Delobel-Ayoub, E. Saemundsen, M. Gissler, A. Ego, I. Moilanen, H. Ebeling, V. Rafnsson, D. Klapouszczak, E. Thorsteinsson, K. M. Arnaldsdóttir, B. Roge, C. Arnaud, D. Schendel
Publication year: 2020
Journal: Journal of Autism and Developmental Disorders
Journal name in source: Journal of autism and developmental disorders
Journal acronym: J Autism Dev Disord
Volume: 50
Issue: 3
First page : 949
Last page: 959
ISSN: 0162-3257
eISSN: 1573-3432
DOI: https://doi.org/10.1007/s10803-019-04328-y
Abstract
We estimated autism spectrum disorder (ASD) prevalence in 7-9 year-old children in 2015 using data from three nationwide health registry systems (Denmark, Finland, Iceland) and two French population-based regional registries. Prevalence ranged from 0.48% in South-East France to 3.13% in Iceland (South-West France: 0.73%, Finland: 0.77%, Denmark: 1.26%). Male/female ratios ranged from 3.3 in Finland to 5.4 in South-West France. Between 12% (Denmark) and 39% (South-West France) of cases were diagnosed with intellectual disability. The variations in population-based ASD prevalence across four European countries with universal health care practices likely reflect variation in detection, referral and diagnosis practices and autism awareness across these areas. Using established population-based data systems is an efficient approach to monitor ASD prevalence trends over time.
We estimated autism spectrum disorder (ASD) prevalence in 7-9 year-old children in 2015 using data from three nationwide health registry systems (Denmark, Finland, Iceland) and two French population-based regional registries. Prevalence ranged from 0.48% in South-East France to 3.13% in Iceland (South-West France: 0.73%, Finland: 0.77%, Denmark: 1.26%). Male/female ratios ranged from 3.3 in Finland to 5.4 in South-West France. Between 12% (Denmark) and 39% (South-West France) of cases were diagnosed with intellectual disability. The variations in population-based ASD prevalence across four European countries with universal health care practices likely reflect variation in detection, referral and diagnosis practices and autism awareness across these areas. Using established population-based data systems is an efficient approach to monitor ASD prevalence trends over time.
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