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Estimating the Prevalence of Autism Spectrum Conditions in Adults: Extending the 2007 Adult Psychiatric Morbidity Survey

Posted Jan 31 2012 9:19pm

You may recall that a couple of years ago a study came out looking at the prevalence of autism in adults in the United Kingdom. They found a prevalence of about 1%, the same as in children.

There’s now a follow up study. The press release is below. The study can be found here . I hope to have the time to go into this in more detail in the next couple of days.

University of Leicester researchers lead on new autism study published today
Britain’s first adult autism survey reveals previously ‘invisible’ group with autism

New research on autism in adults has shown that adults with a more severe learning disability have a greater likelihood of having autism.

This group, mostly living in private households, was previously ‘invisible’ in estimates of autism.

Dr Terry Brugha, Professor of Psychiatry at the University of Leicester, led research on behalf of the University for the report Estimating the Prevalence of Autism Spectrum Conditions in Adults: Extending the 2007 Adult Psychiatric Morbidity Survey, which has today been published by the NHS Information Centre.

The report involved a survey of adults from learning disability registers in Leicestershire, Lambeth and Sheffield between August 2010 and April 2011.

Today’s report presents findings from a new study based on a sample of people with learning disabilities living in private households and communal care establishments. The findings are combined with information from the Adult Psychiatric Morbidity Survey (APMS) 2007, previously published by the NHS Information Centre, which included research on autism also led by Dr Brugha.

Dr Brugha, also a consultant psychiatrist working in the NHS with the Leicestershire Partnership NHS Trust, said: “We were surprised by how many adults with moderate to profound learning disability had autism because previous estimates pointed to lower rates in this group. Because they form a very small part of the adult population, when we added these new findings to the rate we had previously found in adults living in private households, and able to take part in our national survey in 2007, the overall percentage of adults in England with autism did not increase significantly over our 2007 estimate of 1%.”

“Our finding that about 60% of men with profound learning disabilities and 43% of women with profound learning disabilities have autism has never been shown previously. It may also seem surprising how many live at home with parents or carers who provide 24 hour care and shoulder a considerable burden: 42% of men and 29% of women with severe learning disabilities living with family members and in other private households have autism. Taken together with the 2007 survey findings this means that most adults with autism live in private households, and before these two surveys they remained largely invisible”.

Dr Brugha added “This new information will be of particular importance for those who plan and provide services to support those with learning disabilities. In March 2010, the Government published a national strategy for autism and guidance for the condition, with the view to improving the quality of services provided to adults with autism in England. Such improvements can only be achieved if the number of people with recognised and unrecognised autism is quantified. The strategy gave special emphasis to the need to train staff who have responsibility for identifying people with autism and their care. It will be vital to repeat such studies in future years in order to make sure that the national strategy is working effectively.”

Sally-Ann Cooper, Professor of Learning Disabilities at the University of Glasgow, who also contributed to the latest study commented: “Until now routine statistics have not been gathered on the numbers of people with learning disabilities who also have autism leaving this as a hidden problem. Our study clearly shows that the more severe to profound an adult’s learning disability is, the more likely they will be found to have autism if actually assessed.”

  1. Roger Kulp:
    I would be curious how many adults,say over the age of thirty,have been diagnosed,as adults,as learning disabled,as I was.Awareness of LDs was nowhere what it is now,in the 70s,and 80s.I have a NVLD diagnosis as well as one of autism.I received both at the same time.NVLD came into being about the same time as the DSM-IV,before that I had a bunch of other nonspecific diagnoses.It was a bit of a surprise to me,when I learned adults were being considered as having a NVLD,and not being evaluated for autism. A lot of this comes down to both lack of self advocacy,and someone who is not in the health care system.It is not easy for an adult who is not in an institutional setting to get an autism diagnosis.You need to have a regular doctor you see on a regular basis,and just keep pestering them for an autism evaluation.Even with a pre-existing psychiatric diagnosis,you have to keep pestering your doctor for one.It may take a few years,but eventually they will give in. Other than that,I see no other way.There will never be mass public screenings,if that is what you are calling for.
  2. Autism Blog – Estimating the Prevalence of Autism Spectrum … | My Autism Site | All About Autism:
    [...] See the rest here: Autism Blog – Estimating the Prevalence of Autism Spectrum … [...]

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