Prevalence of Autism Spectrum Disorder Among Children Aged 8 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2016
Matthew J. Maenner,Kelly A Shaw,Jon Baio,Anita Washington,Mary E. Patrick,Monica DiRienzo,Deborah Christensen,Lisa D. Wiggins,Sydney Pettygrove,Jennifer Andrews,Maya Lopez,Allison Hudson,Thaer Baroud,Yvette D Schwenk,Tiffany White,Cordelia Robinson Rosenberg,Li Ching Lee,Rebecca A. Harrington,Margaret Huston,Amy Hewitt,Amy Esler,Jennifer Hall-Lande,Jenny N. Poynter,Libby Hallas-Muchow,John N. Constantino,Robert T. Fitzgerald,Walter Zahorodny,Josephine Shenouda,Julie L. Daniels,Zachary Warren,Alison Vehorn,Angelica Salinas,Maureen S. Durkin,Patricia M. Dietz +33 more
- Vol. 69, Iss: 4, pp 1-12
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TLDR
The prevalence of ASD varied considerably across sites and was higher than previous estimates since 2014, highlighting the variability in the evaluation and detection of ASD across communities and between sociodemographic groups.Abstract:
Problem/condition Autism spectrum disorder (ASD). Period covered 2016. Description of system The Autism and Developmental Disabilities Monitoring (ADDM) Network is an active surveillance program that provides estimates of the prevalence of ASD among children aged 8 years whose parents or guardians live in 11 ADDM Network sites in the United States (Arizona, Arkansas, Colorado, Georgia, Maryland, Minnesota, Missouri, New Jersey, North Carolina, Tennessee, and Wisconsin). Surveillance is conducted in two phases. The first phase involves review and abstraction of comprehensive evaluations that were completed by medical and educational service providers in the community. In the second phase, experienced clinicians who systematically review all abstracted information determine ASD case status. The case definition is based on ASD criteria described in the Diagnostic and Statistical Manual of Mental Disorders, Fifth Edition. Results For 2016, across all 11 sites, ASD prevalence was 18.5 per 1,000 (one in 54) children aged 8 years, and ASD was 4.3 times as prevalent among boys as among girls. ASD prevalence varied by site, ranging from 13.1 (Colorado) to 31.4 (New Jersey). Prevalence estimates were approximately identical for non-Hispanic white (white), non-Hispanic black (black), and Asian/Pacific Islander children (18.5, 18.3, and 17.9, respectively) but lower for Hispanic children (15.4). Among children with ASD for whom data on intellectual or cognitive functioning were available, 33% were classified as having intellectual disability (intelligence quotient [IQ] ≤70); this percentage was higher among girls than boys (39% versus 32%) and among black and Hispanic than white children (47%, 36%, and 27%, respectively) [corrected]. Black children with ASD were less likely to have a first evaluation by age 36 months than were white children with ASD (40% versus 45%). The overall median age at earliest known ASD diagnosis (51 months) was similar by sex and racial and ethnic groups; however, black children with IQ ≤70 had a later median age at ASD diagnosis than white children with IQ ≤70 (48 months versus 42 months). Interpretation The prevalence of ASD varied considerably across sites and was higher than previous estimates since 2014. Although no overall difference in ASD prevalence between black and white children aged 8 years was observed, the disparities for black children persisted in early evaluation and diagnosis of ASD. Hispanic children also continue to be identified as having ASD less frequently than white or black children. Public health action These findings highlight the variability in the evaluation and detection of ASD across communities and between sociodemographic groups. Continued efforts are needed for early and equitable identification of ASD and timely enrollment in services.read more
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Prevalence of Autism Spectrum Disorder Among Children Aged 8 Years — Autism and Developmental Disabilities Monitoring Network, 11 Sites, United States, 2014
Jon Baio,Lisa D. Wiggins,Deborah Christensen,Matthew J. Maenner,Julie L. Daniels,Zachary Warren,Margaret Kurzius-Spencer,Walter Zahorodny,Cordelia Robinson Rosenberg,Tiffany White,Maureen S. Durkin,Pamela Imm,Loizos Nikolaou,Loizos Nikolaou,Marshalyn Yeargin-Allsopp,Li-Ching Lee,Rebecca A. Harrington,Maya Lopez,Robert T. Fitzgerald,P Amy Hewitt,Sydney Pettygrove,John N. Constantino,Alison Vehorn,Josephine Shenouda,Jennifer Hall-Lande,Kim Van Naarden Braun,Nicole F. Dowling +26 more
TL;DR: This report provides updated ASD prevalence estimates for children aged 8 years during the 2014 surveillance year, on the basis of DSM-IV-TR criteria, and describes characteristics of the population of children with ASD.
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TL;DR: This report provides updated ASD prevalence estimates from the 2008 surveillance year, representing 14 ADDM areas in the United States and characteristics of the population of children with ASDs are described, as well as detailed comparisons of the 2008 findings with those for the 2002 and 2006 surveillance years.
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