Brief Report: Estimated Prevalence of a Community Diagnosis of Autism Spectrum Disorder by Age 4 Years in Children from Selected Areas in the United States in 2010: Evaluation of Birth Cohort Effects

We compared early-diagnosed autism spectrum disorder (ASD) (defined as diagnosis by age 4 years) between the 2002 and 2006 birth cohorts, in five sites of the Autism and Developmental Disabilities Monitoring Network. In the 2002 cohort, the prevalence/1000 of early-diagnosed ASD was half the 8-year-...

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Published inJournal of autism and developmental disorders Vol. 47; no. 6; pp. 1917 - 1922
Main Authors Soke, Gnakub N., Maenner, M. J., Christensen, D., Kurzius-Spencer, M., Schieve, L. A.
Format Journal Article
LanguageEnglish
Published New York Springer US 01.06.2017
Springer
Springer Nature B.V
Subjects
Autism
Autism Spectrum Disorder - diagnosis
Autism Spectrum Disorder - epidemiology
Autistic children
Behavioral Science and Psychology
Birth
Brief Report
Child
Child and School Psychology
Child, Preschool
Childbirth & labor
Children
Clinical Diagnosis
Cohort Analysis
Cohort Effect
Comparative Analysis
Control
Developmental disabilities
Diagnosis
Disability Identification
Early Diagnosis
Female
Humans
Incidence
Male
Medical diagnosis
Neurosciences
Pediatrics
Pervasive Developmental Disorders
Preschool Children
Prevalence
Psychology
Public Health
Risk factors
United States
United States
Birth cohort effects
Autism
Prevalence
Community diagnosis
Autism spectrum disorder
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Summary:We compared early-diagnosed autism spectrum disorder (ASD) (defined as diagnosis by age 4 years) between the 2002 and 2006 birth cohorts, in five sites of the Autism and Developmental Disabilities Monitoring Network. In the 2002 cohort, the prevalence/1000 of early-diagnosed ASD was half the 8-year-old prevalence (7.2 vs. 14.7, prevalence ratio [PR] 0.5 [0.4–0.6]). Overall, the prevalence of early-diagnosed ASD did not differ between birth cohorts (PR 1.1 [0.9–1.3]). However, in three sites with complete case ascertainment, the prevalence of early-diagnosed ASD was higher for those born in 2006 versus 2002 (PR 1.3 [1.1–1.5]), suggesting possible improvement in early identification. The lack of change in two sites may reflect less complete case ascertainment. Studies in more recent cohorts are needed.
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ISSN:0162-3257
1573-3432
DOI:10.1007/s10803-017-3094-4