Frontiers in Psychiatry (Aug 2023)

Prevalence of Autism Spectrum Disorder in the Centro region of Portugal: a population based study of school age children within the ASDEU project

  • Célia Rasga,
  • Célia Rasga,
  • João Xavier Santos,
  • João Xavier Santos,
  • Cátia Café,
  • Cátia Café,
  • Alexandra Oliveira,
  • Alexandra Oliveira,
  • Frederico Duque,
  • Frederico Duque,
  • Manuel Posada,
  • Ana Nunes,
  • Ana Nunes,
  • Guiomar Oliveira,
  • Guiomar Oliveira,
  • Astrid Moura Vicente,
  • Astrid Moura Vicente

DOI
https://doi.org/10.3389/fpsyt.2023.1148184
Journal volume & issue
Vol. 14

Abstract

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IntroductionAccurate prevalence estimates for Autism Spectrum Disorder (ASD) are fundamental to adequately program medical and educational resources for children. However, estimates vary globally and across Europe, and it is therefore wise to conduct epidemiological studies in defined geo-cultural contexts.MethodsWe used a population screening approach to estimate the prevalence of ASD in the Centro region of Portugal, using a harmonized protocol as part of the Autism Spectrum Disorders in the European Union (ASDEU) project.ResultsThe overall prevalence was estimated at 0.5% (95% CI 0.3–0.7), higher in schools with Autism Units (3.3%, 95%CI 2.7–3.9) than in regular schools (0.3%, 95% CI 0.1–0.5) or schools with Multiple Disability Units (0.3%, 95% CI 0.04–0.6).DiscussionThe results indicate that the diagnosis of ASD is followed by the most effective educational policies in Centro Region. The variability in prevalence estimates across the different regions from the ASDEU project, and globally, is discussed.

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