A very short post for readers to ponder based on the paper by Amanda Baxter and colleagues  who talked about the global epidemiology of the autism spectrum disorders (ASDs).
"In 2010 there were an estimated 52 million cases of ASDs, equating to a prevalence of 7.6 per 1000 or one in 132 persons".
Aside from emphasising the word 'estimated' (I highlighted that), be prepared to see the Baxter paper and that quote cited quite a bit in the peer-reviewed literature in times to come.
 Baxter AJ. et al. The epidemiology and global burden of autism spectrum disorders. Psychological Medicine. 2014. August 11.
A. J. Baxter, T. S. Brugha, H. E. Erskine, R. W. Scheurer, T. Vos, & J. G. Scott (2014). The epidemiology and global burden of autism spectrum disorders Psychological Medicine : http://dx.doi.org/10.1017/S003329171400172X