Vanderbilt University researchers studying interventions for adolescents and young adults with autism are reporting today that there is insufficient evidence to support findings, good or bad, for the therapies currently used.
Although the prevalence of autism is on the rise, much remains to be discovered when it comes to interventions for this population, the researchers concluded.
"Overall, there is very little evidence in all areas of care for adolescents and young adults with autism, and it is urgent that more rigorous studies be developed and conducted," said Melissa McPheeters, Ph.D., M.P.H., director of Vanderbilt's Evidence-Based Practice Center and senior author of the report, a systematic review of therapies published by the Department of Health and Human Services' Agency for Healthcare Research and Quality (AHRQ).
Zachary Warren, Ph.D., director of the Vanderbilt Kennedy Center's Treatment and Research Institute for Autism Spectrum Disorders, said, "There are growing numbers of adolescents and adults with autism in need of substantial support. Without a stronger evidence base, it is very hard to know which interventions will yield the most meaningful outcomes for individuals with autism and their families."
The researchers systematically screened more than 4,500 studies and reviewed the 32 studies published from January 1980 to December 2011 on therapies for people ages 13 to 30 with autism spectrum disorders. They focused on the outcomes, including harms and adverse effects, of interventions, including medical, behavioral, educational and vocational.
Some evidence revealed that treatments could improve social skills and educational outcomes such as vocabulary or reading, but the studies were generally small and had limited follow-up.
Limited evidence supports the use of medical interventions in adolescents and young adults with autism. The most consistent find
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Vanderbilt University Medical Center