The best estimate for the number of children (aged 4-17) with ASD is about 300,000. That means the total US population, including adults, is unlikely to be over 400,000. (Aug 4, 2006)
If Mark Blaxill believes that ASD is rare in adults, I hope he can address Stahlberg et al (2004), Shah et al (1982), Baron-Cohen et al (2001) and Wakabayashi et al (2004). Or perhaps Mr. Blaxill just means "diagnosed" ASD, in which case he might be right, but that would mean he has given up his "hidden horde" device. If he meant "autistic disorder" and not ASD as he stated, that's a little bit harder to judge given available data, but his numbers would also be wrong.
This is an excellent critique. More than adding new reviews, a simpler step is for EVERYONE here to go to amazon, search for Offit's book and the RATE THE REVIEWS!! This is easy to do. There is a voting button where you can say yes or no to the question, "Was this review helpful to you?" (Dec 30, 2005)
Here I just want to point out that Autism Hub readers can also go to Amazon, look for any book (e.g. "Evidence Of Harm"), rate the reviews, and add your own review – if you have read the book of course.