1. Changes in Prevalence of Autism Spectrum Disorders in 2001-2011: Findings from the Stockholm Youth Cohort.
- Author
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Idring, Selma, Lundberg, Michael, Sturm, Harald, Dalman, Christina, Gumpert, Clara, Rai, Dheeraj, Lee, Brian, and Magnusson, Cecilia
- Subjects
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DIAGNOSIS of autism , *AGE distribution , *AUTISM , *CONFIDENCE intervals , *MEDICAL record linkage , *PEOPLE with intellectual disabilities , *COMORBIDITY , *SOCIOECONOMIC factors , *DISEASE prevalence - Abstract
In a record-linkage study in Stockholm, Sweden, the year 2011 prevalence of diagnosed autism spectrum disorders (ASD) was found to be 0.40, 1.74, 2.46, and 1.76 % among 0-5, 6-12, 13-17, and 18-27 year olds, respectively. The corresponding proportion of cases with a recorded diagnosis of intellectual disability was 17.4, 22.1, 26.1 and 29.4 %. Between 2001 and 2011, ASD prevalence increased almost 3.5 fold among children aged 2-17 years. The increase was mainly accounted for by an eightfold increase of ASD without intellectual disability (from 0.14 to 1.10 %), while the prevalence of ASD with intellectual disability increased only slightly (from 0.28 to 0.34 %). The increase in ASD prevalence is likely contributed to by extrinsic factors such as increased awareness and diagnostics. [ABSTRACT FROM AUTHOR]
- Published
- 2015
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