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The new figures also support past studies that suggest autism occurs more frequently in boys than girls. Federal statistics show that ASD prevalence jumped 60% among boys since 2002, compared with 48% among girls.
Increasing the previous federal estimate of 1 in 150, the new data suggest that 1% of children now exhibit some symptoms of an autism spectrum disorder (ASD), a collection of neurological conditions whose symptoms may range from mild social impairment to more serious communication, language and cognitive deficits. The estimate...
For the detailed report, published by the Centers for Disease Control and Prevention (CDC) on Friday, researchers combed through health and education records in 11 U.S. cities. In some sites, the rate of autism was as high as 12 cases per 1,000 children, but averaged across the country the...
Experts note that the CDC database - the Autism and Developmental Disabilities Monitoring Network (ADDM) - is the closest thing to an ideal measure of autism's prevalence. The data are culled from assessments made by health or developmental professionals, including pediatricians, psychologists and language and speech pathologists. In previous evaluations, autism...
Another strength of the ADDM network is that it allows researchers to track autism rates over time. For the current study, Catherine Rice, a behavioral scientist at the CDC's National Center of Birth Defects and Developmental Disabilities, compared data from 10 sites in 2002 with the latest figures from...