Who is affected by autism
- Around the world, about 1 in every 1,000 children has autism.1 And an even larger number may show some features of autism. A Centers for Disease Control and Prevention (CDC) study shows that as many as 1 in 150 children age 8 have an autism spectrum disorder (ASD) in 14 areas of the U.S.2, 3
- It is likely that most cases of autism are passed down through families. Couples who have one child with autism are more likely to have a second child with autism than couples who do not have a child with autism.1
- Boys are up to 4 times more likely than girls to have autism.4
Studies show that autism may be recognized more often than it used to. This may be because of better detection and a broader definition of autism. For example, some children who were previously diagnosed with mental retardation are now being diagnosed with autism. More study is needed to find the reason for the increased diagnosis of autism.
| Author: | Sabra L. Katz-Wise | Last Updated: June 7, 2006 |
| Medical Review: | Michael J. Sexton, MD - Pediatrics Fred Volkmar, MD - Child Psychiatry | |
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