Prevalence of Autism Spectrum Disorders in Guanajuato, Mexico: The Leon survey

Eric Fombonne, Carlos Marcin, Ana Cecilia Manero, Ruth Bruno, Christian Diaz, Michele Villalobos, Katrina Ramsay, Benjamin Nealy

Research output: Contribution to journalArticlepeer-review

71 Scopus citations


There are no epidemiological data on autism for Mexico. This study was conducted to generate a first estimate of ASD prevalence in Mexico. We surveyed children age eight in Leon (Guanajuato). The sample was stratified in two strata: (1) children having special education and medical records (SEMR; N = 432) and (2) children attending regular schools (GSS; N = 11,684). GSS children were screened with the SRS and those with the highest scores were invited to a diagnostic evaluation. The final sample comprised 36 children (80.6 % male) who had confirmed ASD. A third had intellectual disability, 25 % were non-verbal, 69 % had co-occurring behavioral problems. The prevalence overall was 0.87 % (95 % CI 0.62, 1.1 %). This survey provides an estimate for ASD prevalence in Mexico that is consistent with recent studies.

Original languageEnglish (US)
Pages (from-to)1669-1685
Number of pages17
JournalJournal of autism and developmental disorders
Issue number5
StatePublished - May 1 2016


  • Autism spectrum disorders
  • Cultural
  • Epidemiology
  • Prevalence
  • Screening

ASJC Scopus subject areas

  • Developmental and Educational Psychology


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