Autism spectrum disorder prevalence in children aged 12–13 years from the longitudinal study of Australian children

Journal article


May, Tamara, Brignell, Amanda and Williams, Katrina. (2020). Autism spectrum disorder prevalence in children aged 12–13 years from the longitudinal study of Australian children. Autism Research. 13(5), pp. 821-827. https://doi.org/10.1002/aur.2286
AuthorsMay, Tamara, Brignell, Amanda and Williams, Katrina
Abstract

This study aimed to provide an autism spectrum disorder (ASD) prevalence update from parent and teacher report using the Longitudinal Study of Australian Children (LSAC). The LSAC is a prospective cohort study of Australian children representative of the population with two cohorts: Kinder (birth year 1999/2000) and Birth cohort (birth year 2003/2004). Children in the Birth and Kinder cohort with parent‐ and teacher‐reported ASD prevalence were compared to children without ASD. There were N = 3,381 (66%) responding in the Birth cohort at age 12 and N = 3,089 (62%) for the Kinder cohort at age 16. Quality of life was measured by the Pediatric Quality of Life Inventory, and emotional/behavior problems using the Strengths and Difficulties Questionnaire. Parent‐reported ASD prevalence increased to 4.36% [95% CI 3.56–5.19] at age 12–13 years in the Birth cohort and 2.60% [95% CI 2.07–3.31] in the Kinder cohort. Kinder cohort ASD children had more parent‐ and teacher‐reported social problems, and lower parent‐reported social and psychosocial quality of life. As expected, parent‐reported ASD prevalence continued to rise. The higher prevalence in the Birth cohort may relate to milder cases of ASD being diagnosed. Autism Res 2020, 13: 821–827. © 2020 International Society for Autism Research, Wiley Periodicals, Inc.

Lay Summary
Parent‐reported ASD prevalence in 2016 in 12‐year‐old children from the Birth cohort of the Longitudinal Study of Australian Children was 4.4%, and higher than the 2.6% in the earlier born Kinder cohort. The Birth cohort had a milder presentation with fewer social, emotional, and behavioral problems than the Kinder cohort. Milder cases of ASD are being diagnosed in Australia resulting in one of the highest reported prevalence rates in the world.

Keywordsautism spectrum disorder; prevalence; epidemiology; emotional and behavioral problems; longitudinal
Year2020
JournalAutism Research
Journal citation13 (5), pp. 821-827
PublisherJohn Wiley & Sons Ltd
ISSN1939-3792
Digital Object Identifier (DOI)https://doi.org/10.1002/aur.2286
Scopus EID2-s2.0-85080971407
Research or scholarlyResearch
Page range821-827
Publisher's version
License
All rights reserved
File Access Level
Controlled
Output statusPublished
Publication dates
Online02 Mar 2020
Publication process dates
Accepted17 Feb 2020
Deposited19 May 2021
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