Between 2007 and 2011–2012, the prevalence estimate for parent-reported ASD diagnoses among U.S.children aged 6–17 increased significantly, from 1.16% to 2.00%. Increases were observed in all age groups,and among boys aged 6–17. The increases in ASD prevalence reported here extend an ongoing trend observed in the United States and other developed countries over the past several decades (5,6,11).

Source: National Health Statistics Reports, number 65, 20th March 2013.

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