title: Prevalence of Autism Spectrum Disorders Among Children With Intellectual Disability.
abstract: Autism spectrum disorders (ASD) often co-occur with intellectual disability (ID) and are associated with poorer psychosocial and family-related outcomes than ID alone. The present study examined the prevalence, stability, and characteristics of ASD estimates in 2,208 children with ASD and ID identified through the South Carolina Autism and Developmental Disabilities Network. The prevalence of ASD in ID was 18.04%, relative to ASD rates of 0.60%-1.11% reported in the general South Carolina population. Compared to children with ASD alone, those with comorbid ID exhibited increased symptom severity and distinct DSM-IV-TR profiles. Further work is needed to determine whether current screening, diagnostic, and treatment practices adequately address the unique needs of children and families affected by comorbid ASD and ID diagnoses.
authors: Bridgette L. Tonnsen, Department of Psychological Sciences, Purdue University; Andrea Boan, Catherine Bradley, and Jane Charles, Department of Developmental and Behavioral Pediatrics, Medical University of South Carolina; Amy Cohen, Department of Psychology, University of Illinois at Urbana-Champaign; and Laura A. Carpenter, Department of Developmental and Behavioral Pediatrics, Medical University of South Carolina.
authors: Bridgette L
authors: BL
authors: Tonnsen
authors: Andrea D
authors: AD
authors: Boan
authors: Catherine C
authors: CC
authors: Bradley
authors: Jane
authors: J
authors: Charles
authors: Amy
authors: A
authors: Cohen
authors: Laura A
authors: LA
authors: Carpenter
mesh_terms: D000067877:Autism Spectrum Disorder / Q000453:epidemiology* / Q000523:psychology; D002648:Child; D015897:Comorbidity; D005260:Female; D006801:Humans; D008607:Intellectual Disability / Q000453:epidemiology* / Q000523:psychology; D008297:Male; D015995:Prevalence; D013022:South Carolina / Q000453:epidemiology
keywords: ADDM; Autism and Developmental Disabilities Monitoring Network; IQ; South Carolina; autism; intellectual disability; prevalence