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J Autism Dev Disord. 2016 May;46(5):1669-85. doi: 10.1007/s10803-016-2696-6.

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

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Department of Psychiatry, Institute for Development and Disability, Oregon Health & Science University, 840 SW Gaines Str., Mail Code: GH254, Portland, OR, 97239, USA.
CLIMA (Clínica Mexicana de Autismo - México City), Universidad IberoAmericana Mexico City, Van Dyck 66 Street, Colonia Mixcoax, Mexico, D.F, Mexico.
CLIMA-L (Clínica Mexicana de Autismo León), Universidad del Valle de Atemajac, Valle del Mezquital # 101, Colonia del Valle del Campestre, León, Guanajuato, Mexico.
Montreal Children's Hospital, McGill University, 4018 Ste-Catherine West, Montreal, QC, H3Z 1P2, Canada.
TEACCH® Autism Program, University of North Carolina at Chapel Hill, 31 College Place, Building D, Suite 306, Asheville, NC, 28801, USA.
Division of Biostatistics, OHSU-PSU School of Public Health, Portland, OR, USA.


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.


Autism spectrum disorders; Cultural; Epidemiology; Prevalence; Screening

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