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[Prevalence estimation of Autism Spectrum disorders in chilean urban population]

Carolina Yáñez1, Paulina Maira2, Constanza Elgueta2

  • 1Hospital Clínico San Borja Arriarán, Santiago, Chile.

Andes Pediatrica : Revista Chilena De Pediatria
|October 15, 2021
PubMed

Insights

This study estimated Autism Spectrum Disorder (ASD) prevalence in Santiago, Chile, finding a rate of 1.95%. Early multidisciplinary intervention is crucial for affected children.

Area of Science:

  • Pediatric Epidemiology
  • Neurodevelopmental Disorders

Background:

  • Global Autism Spectrum Disorder (ASD) prevalence ranges from 0.5-1%.
  • Prevalence of ASD in Chile remained unestablished prior to this study.

Purpose of the Study:

  • To determine the prevalence of ASD in two urban communes within Santiago, Chile.
  • To provide initial data on ASD rates in the Chilean population.

Main Methods:

  • A cross-sectional study involving 272 children aged 18-30 months.
  • Screening with the Modified Checklist for Autism in Toddlers (M-CHAT), followed by clinical diagnosis by a pediatric neurologist.
  • Diagnostic confirmation utilized the Autism Diagnostic Observation Schedule - Second Version (ADOS-2).

Main Results:

  • A prevalence of 1.95% (95% CI 0.81-4.63) for ASD was identified.
  • Out of 44 children with an altered M-CHAT, 5 received a clinical ASD diagnosis.
  • The study observed a 4:1 male to female ratio in diagnosed cases.

Conclusions:

  • This research presents the first ASD prevalence estimate for two communes in Santiago, Chile.
  • The observed high prevalence underscores the necessity for resources supporting early, multidisciplinary care for children with ASD.
Abstract

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