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Number diagnosed with autism jumps 787 per cent in two decades, study shows

October 27, 2021 by jennifer Leave a Comment

The number of people diagnosed with autism has jumped by 787 per cent in the past two decades, a new study shows, likely an effect of increasing recognition.

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Number diagnosed with autism jumps 787 per cent in two decades, study shows

Number diagnosed with autism jumps

Researchers compared the rates of autism recorded in GP records in England, covering over 9 million patients from GP practices.

The exponential increase – between 1998 and 2018 – was greater for females than males, with the greatest rises among adults.

The research suggests increases could be due to increased reporting and application of diagnosis. This is the first study to analyse the time trend of autism diagnosis in a population-based UK clinical cohort by developmental stage, level of severity and by gender, over a twenty-year period.

The study, published in the Journal of Child Psychology and Psychiatry, suggests the diagnosis of Asperger’s disorder, a form of autism that does not have attendant intellectual disability, was increasingly applied until the diagnosis was officially scrapped in 2013.

Differing rates of increase between subgroups suggest effects are primarily due to increased recognition, although an actual increase in autism incidence cannot be ruled out.

A UK policy introduced in 2009 to invest in adult assessment centre may underpin the rise in adult diagnosis.

“As there is not really a plausible reason why autism should increase more in adults and females our study suggests the change is probably due to increased identification, and not more people with neurodevelopmental disorders per se.” said lead author Ginny Russell, from the University of Exeter.

“However, autism is not like a continent awaiting discovery. The definition of what constitutes autism has changed over time, and females and adults were not often thought of as having autism 20 years ago. The vocal work of charities and media coverage, combined with changes in policy has led to more assessment centres for adults, and an autism narrative that many women and girls identify with.  Consequently demand for diagnosis has never been higher.”

autism

Data was taken from the Clinical Practice Research Datalink (CPRD) primary care database, which contains patients registered with practices contributing data to the CPRD between 1998 and 2018. A total of 65,665 patients had a diagnosis of autism recorded in 2018.

The findings also highlighted increased age of diagnosis over time within each developmental stage. In preschools this could be partly because diagnosis of autism in younger children is obviously complex and may need to go at the family’s pace.

De-stigmatization of the label due to work by the neurodiversity movement and parent-led lobby groups may have contributed to rising demand for diagnosis in order to access support, outstripping the capacity to carry out assessments in clinical practice.

Autism is popularly conceptualized as a ‘male’ disorder. In response there has been a drive toward referral of more females. The study, which shows a marked growth in female diagnoses compared with males, suggest such initiatives have been having an effect.

For more reading about Autism:

Unmasking Autism: Discovering the New Faces of NeurodiversityUnmasking Autism: Discovering the New Faces of NeurodiversityUnmasking Autism: Discovering the New Faces of NeurodiversityUniquely Human: A Different Way of Seeing AutismUniquely Human: A Different Way of Seeing AutismUniquely Human: A Different Way of Seeing AutismWhat I Mean When I Say I'm Autistic: Unpuzzling a Life on the Autism SpectrumWhat I Mean When I Say I’m Autistic: Unpuzzling a Life on the Autism SpectrumWhat I Mean When I Say I'm Autistic: Unpuzzling a Life on the Autism SpectrumThe Reason I Jump: The Inner Voice of a Thirteen-Year-Old Boy with AutismThe Reason I Jump: The Inner Voice of a Thirteen-Year-Old Boy with AutismThe Reason I Jump: The Inner Voice of a Thirteen-Year-Old Boy with AutismThe Autistic Brain: Thinking Across the SpectrumThe Autistic Brain: Thinking Across the SpectrumThe Autistic Brain: Thinking Across the SpectrumTen Things Every Child with Autism Wishes You KnewTen Things Every Child with Autism Wishes You KnewTen Things Every Child with Autism Wishes You Knew

 

Materials provided by University of Exeter. Note: Content may be edited for style and length.

Number diagnosed with autism jumps 787 per cent in two decades, study shows

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