For the past decade or three the reported autism rates have been going up and up and up. This has led to The Cult Of R-F-K Jr. and Jenny McCarthy, with their vaccine -> autism claims. Which far, far, too many people follow.
A group of academic statisticians took the time to chart out the recent historical claimed huge rise in autism and compare it to… the rates of numerous other childhood (so-called) disorders.
“The research team noted more than three times the number of cases of autism in 2010 as compared to 2000; however, nearly 65 percent of this increase could be accounted for by a reduction in the number of individuals classified in the intellectual disability category in the IDEA data. The diagnostic reclassification of individuals from the category of intellectual disability to the category of autism accounts for a large proportion of the change, which varied depending on the age of the children. The researchers estimate that, for 8 year-olds, approximately 59 percent of the observed increase in autism is accounted for by reclassification, but by age 15 reclassification accounts for as much as 97 percent of the increase in autism.”
In other words, and assuming (yes, I know…) that their analysis is valid, there ain’t no there, there, in regards to autism increase.