Limey, that link says in part;
Quote:
Researchers from Guy's and St Thomas' Hospital in south London, publishing their findings in the Lancet, looked at a group of 57,000 children aged nine and 10 in 2001.
They identified 255 who had already been diagnosed as having autistic disorders and 1,515 judged to be possible undetected cases.
A randomly selected sub-group of 255 children was chosen for in-depth clinical assessment.
The prevalence of "classic" childhood autism was 39 per 10,000, and that of other ASDs 77 per 10,000.
In total, autistic disorders affected 116 per 10,000 children.
The researchers extrapolated their findings to suggest one in 100 British children may have some form of autism.
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I should think those numbers wouldn't be to far off for the US, but I could be wrong. 
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The descent of man ~ Nixon, Friedman, Reagan, Trump.
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