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.

A systematic PRISMA review of individuals with autism spectrum disorder in secure psychiatric care: prevalence, treatment, risk assessment and other clinical considerations

“…Of the 138 (cohort of patients treated over a six6 year period), 42 (30%) had an ASD (Esan, Chester, Gunaratna, Hoare, & Alexander, 2015). However, it is important to point out here that a number of studies and papers have highlighted the relatively high rate of intellectual disabilities in both children and adults with ASD in the general population/community samples (e.g., La Malfa, Lassi, Bertelli, Salvini, & Placidi, 2004;Matson & Shoemaker, 2009;Postorino, Fatta, Sanges, Giovagnoli, De Peppo, Vicari, & Mazzone, 2016;Tonnsen, Boan, Bradley, Charles, Cohen, & Carpenter, 2016). with ASD exhibited a significantly higher total AQ scores compared to those without a diagnosis of ASD.…”

Models of the Organisation of Comprehensive Care for Children with ASD in the West

“…Сравнения детей только с РАС с детьми с ко-морбидными расстройствами показали возрастаю-щую тяжесть симптоматики и различия профилей DSM-IV-TR [29]. Кристенсен [10] …”

Models of the organisation of comprehensive care for children with ASD in the west

“…Compared to children with ASD alone, those with comorbid ID exhibited increased symptom severity and distinct DSM-IV-TR profiles. 6 Christensen's, 7 recommendations include enhancing strategies to lower the age of first evaluation of ASD by community providers: by 2020, children with ASD to be evaluated by age 36 months and begin receiving community-based support and services by age 48 months. The NAS and other non-governmental organisations use the prevalence figures to campaign for the Government, NHS and councils to make sure services are available for the right number of people, and to bring down diagnosis waiting time and for every area to have the services that autistic children need.…”