Bayesian prevalence of autism and unmet special education needs in Chile in a sample of three million school-age children.
Andres Roman-Urrestarazu, Adele Tyson, Gabriel Gatica-Bahamonde and 12 others
PMID 40757983WHAT IT FOUND
School records in Chile identified 0.46% of children with autism, but linking these to health records revealed a true prevalence of 1.31%.
This suggests a large unmet need, with an estimated 25,903 autistic children not accessing school-based support services.
Key findings
01The adjusted prevalence of autism in Chilean school records was 0.46%, significantly lower than the 1.31% national estimate derived from Bayesian modelling that linked school and clinical data.
02In the validation region, only 30.12% of children with diagnosed autism accessed school-based special education support, indicating a substantial gap between clinical diagnosis and educational service provision.
03Boys were six times more likely than girls to have an autism diagnosis in school records, a disparity much higher than the international average of 4:1.
STILL TO COME
How it was doneWhat they foundWhat it means for OTsWhat it means for SLPs
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What it does not show
The national prevalence estimate assumes that the gap between school and clinical records found in one region (Araucanía Sur) is the same across all of Chile. The study relies on administrative data, so it cannot distinguish between children who need support but do not want it, and those who are genuinely unserved. The definition of 'unmet need' includes children in private schools who may have received other forms of support not captured by the public registry. Findings are specific to the Chilean education and health system and may not apply to other countries.
Declared interests
The authors declared no conflicts of interest and received no specific funding for this work.
The easy way to misread this
Do not interpret the 0.46% school prevalence as the true rate of autism in Chile. The study shows this figure is an undercount because it misses children diagnosed clinically who are not enrolled in the school support programme.
Summarised by AI from the full paper, without a clinician reviewing it. Check it against the source before it changes what you do. Read it on PubMed →