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The estimate that ASDs occur is in one in every 150 children. This particular syndrome also shows a prevalence in males. Boys are twice as likely as girls to be affected with Asperger's syndrome.

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โˆ™ 2014-01-07 00:38:23
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โˆ™ 2015-08-07 15:16:08

Pervasive developmental disorders (autism spectrum disorders) are estimated to occur at a rate of 2-6 per 1000 in the US population. Males are diagnosed at a rate 3-4 times higher than that of females. However, the lower the IQ, the more likely they will be diagnosed at an equal rate. This indicates that females may be better able to camouflage or have symptoms that are less troublesome to parents and teachers. Asperger's Syndrome is diagnosed at a rate of 2-3 per 1000. Some studies indicate that Asperger's Syndrome is more common than it seems and often goes undiagnosed. Some research suggests that Asperger's Syndrome is more common than autism. Males are diagnosed with Asperger's Syndrome at a rate 4-6 times higher than that of females. Males are more likely to react with violence or rages to stress than females, so parents and teachers recognize that there is a problem and thus it is more likely to be diagnosed.

So, Asperger's Syndrome is probably underdiagnosed, but is probably at least 2-3 persons of every 1000 in the United States.


The SNAP Project in the UK, using the best known tests and relaying on the leading personnel, gave the following results: Lancet, 2006 Jul 15;368(9531):210-5.Prevalence of disorders of the autism spectrum in a population cohort of children in South Thames: the Special Needs and Autism Project (SNAP).Baird, Gillian et al. [Newcomen Centre, Guy's and St Thomas' NHS FoundationTrust, London, UK. gillian.baird@gstt.nhs.UK]Within a total population cohort of 56,946 children aged 9-10 years, we screened all those with a current clinical diagnosis of ASD (n=255) or those judged to be at risk for being an undetected case (n=1515).The prevalence of childhood autism was 38.9 per 10,000 and that of other ASDs was 77.2 per 10,000, making the total prevalence of all ASDs 116.1 per 10,000.A narrower definition of childhood autism, which combined clinical consensus with instrument criteria for past and current presentation, provided a prevalence of 24.8 per 10,000.Services in health, education, and social care will need to recognise the needs of children with some form of ASD, who constitute 1% of the child population.

about 1.5 % of children have aspergers but i heard the diagnosis of aspergers is going up and some say one day it is people with out aspergers syndrome who there will be hardly any of . back to the question aspergers is 3 or 4 times as common in males than females but the average for all genders is about 1.5 %

arigatou and good bye

this question has been answered by aspie (or Luke)so please look at my pages and meet me at my message board


Taking the current World Population Estimate from which is 6.9 Billion and using the figures from the best current studies (links below) we can see that 1 in every 116 people have a form of autism, and that Asperger's is 7/8ths of the spectrum, giving us a 1:101 ratio.

Applying that ratio to the world population will give us a very approximate figure of 68.3 Million people with Asperger's syndrome world-wide.

The very latest (but still somewhat controversial) studies suggest figures higher at even 1:36.1 (Baird et al), which would suggest 191 Million world-wide.

Perhaps from all of this we can see that Asperger's is rather too common to be comfortably classified as an impairment or disorder, and it may best be described as a 'less-than-rare natural human variation or difference', not too dissimilarly from how we might perceive such other differences as left-handedness, double-jointedness, eccentricity, and entrepreneurship?

A: I don't know where the person above got their figures but Asperger's accounts for only about 1/3rd of the Autism Spectrum not 7/8ths, hence approximately 1-in-250 people have Asperger', or about 0.4%.

- I've also heard (sorry about the lack of sources) Asperger is more or less common in different populations. For instance that it may be more common among white than black people. Which would make a calculation of the world total number of people with Asperger based on studies in any single country, a problematic task at best. /Erik

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