What Are the Rates of Autism Today?

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So, the rates of autism were estimated to be one in 88, which is much higher than it was 10 or 20 or 30 years ago, when it used to be estimated one in 2000. And the main reason for the changes have to do with the definition of autism which has been much broadened so that more children are now considered to have autism than was the case 20 or 30 years ago.

So, of course the rates are going to be higher. The other reason that the rates are higher is because autism is better diagnosed more carefully diagnose and spotted than it ever was before because awareness, and then finally epidemiologist that is attempting to pin down what the rates are, are better today than they were 10 or 20 years ago.

So, the estimates from those studies are more accurate now than they were in the past, or maybe just hospital records might have been the basis, now more careful determinations in large neighborhoods are the basis for estimation. Far more accurate. A year or two ago, a report was released, estimating the rates of autism in teenagers to 44 year old, and in 44 year old to 74 year old.

So, if the rates of autism have gone up then that a study using the same uniform diagnostic plan for all cases would have been predicted to have very low rates among the older generation, higher rates among the recent, adults, adolescents is to adults, and of course we now know very high rates.

So, what did they find? They did not find out. They found the same rates, 1 in a 100 for the youngest as well as the oldest generation. We've got 70 years, do you use today's criteria, then you use today's Epidemiology, 44 to 74 have the same rates. That suggest that the rate of autism have changed a little in 70 years.

So, that has implications for various theories of causes.