US prevalence rate of autism among school-aged children remains 1 in 68

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The prevalence rate of autism among school-aged children in the US remains unchanged at 1 in 68 (14.6 per 1,000) according to new report from the US Centers for Disease Control and Prevention (CDC)

The report, published at the start of Autism Awareness Week, shows essentially no change in ASD prevalence from a previous report released in 2014, raising hopes that the prevalence rate is starting to stabilise.

CDC says that it is too soon to reach such a conclusion and that it will continue tracking ASD prevalence to better understand changes over time.

The data come from CDC’s Autism and Developmental Disabilities Monitoring (ADDM) Network – a tracking system that provides estimates of the prevalence and characteristics of ASD among eight-year-old children in 11 communities within Arizona, Arkansas, Colorado, Georgia, Maryland, Missouri, New Jersey, North Carolina, South Carolina, Utah, and Wisconsin.

The data in the latest report are for 2012 while the data in the previous 2014 report were from 2010.

Although the average ASD prevalence of the 11 ADDM Network sites combined did not change between 2010 and 2012, ASD prevalence still varied widely between the 11 communities. Differences were seen by geographic region and between sites with different access to data resources.

What we know for sure is that there are many children living with autism who need services and support, now and as they grow into adolescence and adulthood.

Said Stuart K. Shapira, MD, PhD, chief medical officer for CDC’s National Center on Birth Defects and Developmental Disabilities.

The new report also underscores where efforts and resources can be directed to better support children and families with ASD. In the US black and Hispanic children continue to be less likely to be identified with ASD than white children. In addition, black and Hispanic children receive developmental evaluations later than white children.

Targeted strategies are needed to identify and address barriers in order to lower the age at which black and Hispanic children are evaluated, diagnosed, and connected to the services they need.

Said Daisy Christensen, PhD, a CDC epidemiologist and lead author of the ADDM Network report.

The report also shows that, overall, less than half (43 per cent) of children identified with ASD receive developmental evaluations by age three. This suggests that many children may not be getting identified as early as they could be. The US Healthy People 2020 goal is to increase to 47 per cent the proportion of children with ASD having a first evaluation by age three.

The most powerful tool we have right now to make a difference in the lives of children with ASD is early identification. Parents, childcare professionals and doctors can monitor each child’s development and act right away on any developmental concerns. It’s important to remember that children can be connected to services even before an official diagnosis is made.

Said Dr Shapira.

CDC’s Learn the Signs. Act Early program provides parents, childcare professionals, and healthcare providers free resources, in English and Spanish, for monitoring children’s development. The program offers parent-friendly, research-based milestone checklists for children as young as two months of age. The program also offers information about what to do if there is a developmental concern and whom to contact for assistance.

More information about CDC’s autism activities can be found here.

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Special World, from Inclusive Technology, is a free website linking 125,000 special education teachers, speech therapists and occupational therapists in 150 countries. Special World readers and contributors work with children who have additional needs or special educational needs including those with severe, profound and multiple learning difficulties and disabilities.

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