Navigation Links
Study on DSM-5 shows effects on autism diagnosis and prevalence

NEW YORK, N.Y. (January 27, 2014) A new study finds that the estimated prevalence of autism under the new DSM-5 criteria would decrease only to the extent that some children would receive the new diagnosis of social communication disorder (SCD). The study, funded in part by a research grant from Autism Speaks, the world's leading autism science and advocacy organization, appears online in the Journal of the American Academy of Child and Adolescent Psychiatry.

Overall, the researchers found that 83 percent of children who received a diagnosis of autism under the DSM-IV would also receive the diagnosis under DSM-5. The remaining 14 percent would be diagnosed with SCD. These results help answer questions raised by a Centers for Disease Control and Prevention study published last week. Last week's CDC study similarly concluded that DSM-5 would lower estimates of autism prevalence by around 10 percent. However, this study did not take into account SCD, nor did it directly evaluate children for either disorder. Rather, it attempted to apply the new criteria to old medical and educational records of children identified as having autism in 2008.

The new diagnosis of SCD was created along with revised criteria for autism in the fifth edition of the Diagnostic and Statistical Manual of Mental Disorders (DSM-5), last May. SCD describes individuals who have social and communication difficulties without the repetitive behaviors or restrictive interests typical of autism. In addition, the DSM-5 combined earlier subtypes of autism into one diagnosis of autism spectrum disorder (ASD).

Both studies back earlier "field tests" of the DSM-5 criteria, which likewise suggested that the new category of SCD would apply to around 10 percent of children who would have previously received a diagnosis of autism. This sparked widespread concern among many families and autism advocates because, as yet, there are no treatment guidelines for SCD. Backing these concerns, Autism Speaks has received accounts from families who report their children losing autism services after an earlier diagnosis of ASD was changed to SCD.

"Autism Speaks is taking these reports of lost services very seriously," says Autism Speaks Chief Science Officer Rob Ring. "We advocate for all individuals affected by disabling symptoms that would benefit from autism-related services and supports."

The new findings were based on detailed, in-person ASD evaluations performed during an earlier Autism Speaks study by the same investigators. The earlier study looked at more than 55,000 children, ages 7 to 12 years old, in a South Korean suburb. Using DSM-IV criteria, it found an autism prevalence of 1 in 38 (2.6 percent). Importantly, this prevalence number included many children whose autism had gone previously undetected. As such, they would have been missed by estimating prevalence based on autism service records, as is done by the CDC.

In their new study, the investigators used DSM-5 criteria to re-assess the symptoms of 292 children diagnosed with autism during their earlier study. This lowered their estimate of ASD prevalence to 2.2, or 1 in 45. But the difference disappeared when they added back the children who fit the new diagnosis of SCD.

The researchers went further to determine which children would be most likely to have their diagnosis changed from autism to SCD. The old, DSM-IV guidelines categorized individuals with autism into subtypes. These included autistic disorder, Asperger disorder and pervasive developmental disorder not otherwise specified (PDD-NOS).

Looking at these subtypes, Yale child psychiatrist and epidemiologist Young-Shin Kim and her colleagues found the following:

  • Of children previously diagnosed with PDD-NOS, 71 percent would now be diagnosed with ASD, 22 percent with SCD and 7 percent with another non-autism disorder.
  • Of those previously diagnosed with Asperger disorder, 91 percent would now be diagnosed with ASD, 6 percent with SCD and 3 percent with another non-autism disorder.
  • Of those previously diagnosed with autistic disorder, 99 percent would now be diagnosed with ASD and 1 percent with SCD.

"Until proven otherwise, the treatments for ASD and SCD should remain the same or similar," says Dr. Kim. "It's important for children moving to a SCD diagnosis and to their families that they continue receiving the interventions they would have received with an autism diagnosis under the earlier DSM-IV criteria."

"Our research team also wants to thank Autism Speaks and its donors for supporting this important work," she adds. In addition to two grants from Autism Speaks, the study also received support from the Brain Research Foundation, the Simons Foundation, and the National Institutes of Health.


Contact: Steffanie Marchese
Autism Speaks

Related medicine news :

1. IU School of Medicine researchers awarded $300,000 GE/NFL grant to study concussions
2. Team to study control of malaria-related parasite growth with $2.1-million NIH grant
3. Practice makes perfect if you have a partners touch, according to new study
4. Study shows 1 in 5 women with ovarian cancer has inherited predisposition
5. Study could lead to liquid biopsy tests for bladder cancer
6. New study examines patterns of cancer screening in Appalachian women
7. Regenstrief, IU study: Half of hospitalized adults over 65 need surrogate decision-makers
8. Study: Possible new druggable target in Ewings Sarcoma
9. Miriam Hospital study links intimate partner violence and risk of HIV
10. Study reveals how ecstasy acts on the brain and hints at therapeutic uses
11. Study finds troubling relationship between drinking and PTSD symptoms in college students
Post Your Comments:
Related Image:
Study on DSM-5 shows effects on autism diagnosis and prevalence
(Date:11/24/2015)... UT (PRWEB) , ... November 24, 2015 , ... It ... Magazine. For a business, it is critical that the first impression be positive and ... they are not likely to buy anything or want to return. They will also ...
(Date:11/24/2015)... ... November 24, 2015 , ... ... their knowledge and experiences at a live taping of the next CURE ... the Cure of Gastrointestinal Cancers 2015 Symposium at Georgetown University Hotel & Conference ...
(Date:11/24/2015)... ... ... Aided by seed funding from the Ron Foley Foundation, researchers at Western ... how to detect and treat pancreatic cancer (PC). , WCHN researchers will focus ... (ncRNA), genetic material that is present in the blood of patients with PC. ...
(Date:11/24/2015)... ... November 24, 2015 , ... ... its exceptional customer service: the TrustDale certification. The award recognizes good companies for ... stone honing , tile and grout, and hard surface restoration company earned this ...
(Date:11/24/2015)... ... November 24, 2015 , ... World Patent Marketing ... a household invention that revolutionizes the vending machine industry by providing healthy and ... worth $2 billion," says Scott Cooper, CEO and Creative Director of World Patent ...
Breaking Medicine News(10 mins):
(Date:11/24/2015)... , Nov. 24, 2015  Boston Scientific Corporation (NYSE: ... Oppenheimer 26th Annual Healthcare Conference on December 8, in ... Susie Lisa , vice president, Investor Relations, will participate ... beginning at approximately 8:35 a.m. ET. --> ... in a 30-minute question-and-answer session with the host analyst ...
(Date:11/24/2015)...   Renowned UAE ... s advice and insights on supplements and healthy diet ... 50% of Dubai residents are not ...   femMED launches comprehensive solutions for women , ... residents are not consuming enough to keep themselves healthy. A local ...
(Date:11/24/2015)... 2015 Abaxis, Inc. (NasdaqGS: ABAX ), ... for the medical, research, and veterinary markets worldwide, announced ... will present at the 27 th Annual Piper ... 11:30 a.m. ET. The conference will be held at ... York City . Abaxis, Inc. is ...
Breaking Medicine Technology: