Between 2011 and 2022, the number of people diagnosed with autism increased by 175% from 2.3 per 1,000 in 2011 to 6.3 per 1,000 in 2022. The largest relative increase in diagnosis rates from 2011 to 2022 occurred among 26-to-34-year-olds, with a rise of 450%.

Among girls, the increase in diagnosis rates nearly doubled the increase for boys at 305%, compared to 185%. Autism diagnosis rates also increased more among women, at 315% compared to a 215% increase for men.

Diagnosis rates were highest among children, and between 2011 and 2022, children . . .

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Autism & I/DD

Intellectual and developmental disabilities (I/DD) are a physical and/or cognitive impairments that occur before the age of 22. Autism spectrum disorder is generally considered a type of developmental disability that affects behaviour and communication. The autism and I/DD market provides supports and health care services to these populations. Over the past decade, there has been an increase in the changes and challenges affecting I/DD and autism markets—the move to managed care and value-based care, the shift away from residential treatment, the increasing emphasis on consumer-directed care, and new workforce challenges.


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The Modified Checklist for Autism in Toddlers (M-CHAT), a widely used screening tool for early detection of autism spectrum disorder (ASD) in children ages 16 to 30 months, missed 38% of high-risk toddlers who were later diagnosed with ASD, according to a study of Swedish national health data. The study analyzed 2,178 high-risk children born between 2013 and 2019 who were screened with the M-CHAT at approximately age 2 and followed through age 9 for… Read