US study shows 10-fold increase in autism over the past 20 yearsBMJ 2003; 326 doi: https://doi.org/10.1136/bmj.326.7380.71 (Published 11 January 2003) Cite this as: BMJ 2003;326:71
- Scott Gottlieb
- New York
Autism is about 10 times as common in the United States today as it was in the 1980s, concludes the largest epidemiological study of the condition yet to be carried out.
The study, conducted in metropolitan Atlanta, Georgia, in 1996 found that 3.4 in every 1000 children aged 3 to 10 years had mild to severe autism, on the basis of a review of their medical records. Surveys in the before the mid-1980s had found that only 4 to 5 in every 10 000 children were affected. The researchers in the Atlanta study, from the …