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Both American children have autism? The US government answer this question at least three different ways and says that the latest estimate – 1 in 40 kids – not necessarily mean that the numbers are rising.
The new number, published on Monday in Paediatrics, is one of three periodic surveys that the government uses to evaluate rates & # 39; autism. Higher than estimated & # 39; different survey published earlier this year, but the surveys use different methods and measuring different populations & # 39; children so the results are not really comparable.
Because m & # 39; there is no medical test, "the disorder of autism spectrum condition is particularly difficult to track," the government report researchers wrote in Pediatrics.
The true incidence of autism x & # 39; likely to vary from about 1 in 59 children to 1 in 40 children, the researchers say, taking into account information from the three surveys.
"All contribute different information to form a more complete picture", said Michael Kogan, main author of the new report led by U.S. Health Resources & Services Administration, a federal agency.
Several reports in & # 39; in recent years have suggested that rates & # 39; autism is increasing slightly. The experts think mainly due to earlier diagnosis, definition and expanded awareness, but say they can not exclude a real increase caused by unknown factors.
Here's a rundown on the three surveys:
– The latest estimate is based on responses from over 43,000 parent & # 39; children between 3 and 17 years. Were asked if their child ever been diagnosed with & # 39; autism spectrum disorder, the formal name including mild cases to severe. The 2016 survey was based on the Internet; Those were earlier telephone survey show slightly higher rates but researchers say that the results are not comparable,
The national representative survey suggest that about 1.5 million children of & # 39; the United States have autism – 2.5 percent or 1 in & # 39; 40.
– The Centers for Control and Prevention of Disease gather representative data at national level by internal interviews. In 2016, also asked parents & # 39; children & # 39; between 3 and 17 years who have been diagnosed with autism and emerged with & # 39; slightly higher rate than in previous years but similar to the estimate & # 39; 1 f & # 39; 40.
– The CDC also uses system & # 39; tracking & # 39; 11 states. It is based on health records and school to show which children meet the criteria for autism, focusing on those 8 years since the vast majority of cases are diagnosed by that age. Report from this network came in & # 39; April, showed that 1 in 59 children had autism but in & # 39; certain places found much higher rates. This estimate is considered the most rigorous, but not national representative.
Autism Speaks, a group & # 39; advocacy, is among the organizations that use the estimate of the CDC network. It tends to be more conservative and potentially more accurate than the parental reports, the director said Dean Hartley, senior director for the group,
The autism is a disorder & # 39; & # 39 development can; involve varying degrees & # 39; language and social impairments, often including repetitive behavior.
Experts say that affected kids are better with early diagnosis and treatment, but some doctors may dismiss early signs and some parents may not know about symptoms & # 39; autism, said Dr. Stuart Shapira.
The pediatric survey found that about one-third of kids with & # 39; parismu reported by parents do not receive any treatment behavior and showed that many parents have had trouble finding services for their children, and have repeat & # 39; previous studies.
Shapira noted that the agency has appliġenza the Milestone Tracker by phone & # 39; anything to help parents recognize growth retardation.
The Department of Health and the Associated Press Science receives support from the Scientific Department of Education of Howard Hughes Medical Institute. The AP is solely responsible for all content.
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