The US Centers for Disease Control and Prevention (CDC) has released new
figures for autism prevalence in the United States. They now give a
prevalence of 1 in 50, but this story, like most autism-related stories,
goes deeper than the numbers.
First, this prevalence estimate doesn’t focus only on 8-year-olds,
the population used for deriving the 1 in 88 number reported in 2012.
Instead, it encompasses the number of diagnosed autistic people walking
around in 2011 and 2012 who were ages 6 to 17. The 2007 percentage of
the population fitting that description was 1.16%. These new numbers put
that value for 2011-2012 at 2%.