The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan

BACKGROUND: No large-scale study of the timing of autism spectrum disorder (ASD) diagnosis has been performed in Japan to date. The aim of this study was to examine sex differences and annual trends in age at diagnosis of ASD using clinical data. METHODS: Clinical data for children aged less than 18...

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Autores principales: Kurasawa, Shigeki, Tateyama, Kiyomi, Iwanaga, Ryoichiro, Ohtoshi, Taro, Nakatani, Ken, Yokoi, Katsushi
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Hindawi 2018
Materias:
Research Article
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5964587/
https://www.ncbi.nlm.nih.gov/pubmed/29853922
http://dx.doi.org/10.1155/2018/5374725
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author Kurasawa, Shigeki
Tateyama, Kiyomi
Iwanaga, Ryoichiro
Ohtoshi, Taro
Nakatani, Ken
Yokoi, Katsushi
author_facet Kurasawa, Shigeki
Tateyama, Kiyomi
Iwanaga, Ryoichiro
Ohtoshi, Taro
Nakatani, Ken
Yokoi, Katsushi
author_sort Kurasawa, Shigeki
collection PubMed
description BACKGROUND: No large-scale study of the timing of autism spectrum disorder (ASD) diagnosis has been performed in Japan to date. The aim of this study was to examine sex differences and annual trends in age at diagnosis of ASD using clinical data. METHODS: Clinical data for children aged less than 18 years diagnosed with ASD between January 1, 2009, and December 31, 2013, and in whom follow-up was possible 1 year after diagnosis, were extracted. RESULTS: The mean age at ASD diagnosis was 7.2 ± 4.2 years and the mode age was 3 years. No sex difference was observed for age at diagnosis (p = 0.157). An annual trend of earlier diagnosis was observed when fiscal years were compared (p < 0.001). CONCLUSION: This study highlighted the need to develop and provide appropriate early intervention methods and services for ASD children in Japan.
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spelling pubmed-59645872018-05-31 The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan Kurasawa, Shigeki Tateyama, Kiyomi Iwanaga, Ryoichiro Ohtoshi, Taro Nakatani, Ken Yokoi, Katsushi Int J Pediatr Research Article BACKGROUND: No large-scale study of the timing of autism spectrum disorder (ASD) diagnosis has been performed in Japan to date. The aim of this study was to examine sex differences and annual trends in age at diagnosis of ASD using clinical data. METHODS: Clinical data for children aged less than 18 years diagnosed with ASD between January 1, 2009, and December 31, 2013, and in whom follow-up was possible 1 year after diagnosis, were extracted. RESULTS: The mean age at ASD diagnosis was 7.2 ± 4.2 years and the mode age was 3 years. No sex difference was observed for age at diagnosis (p = 0.157). An annual trend of earlier diagnosis was observed when fiscal years were compared (p < 0.001). CONCLUSION: This study highlighted the need to develop and provide appropriate early intervention methods and services for ASD children in Japan. Hindawi 2018-05-07 /pmc/articles/PMC5964587/ /pubmed/29853922 http://dx.doi.org/10.1155/2018/5374725 Text en Copyright © 2018 Shigeki Kurasawa et al. https://creativecommons.org/licenses/by/4.0/ This is an open access article distributed under the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
spellingShingle Research Article
Kurasawa, Shigeki
Tateyama, Kiyomi
Iwanaga, Ryoichiro
Ohtoshi, Taro
Nakatani, Ken
Yokoi, Katsushi
The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title_full The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title_fullStr The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title_full_unstemmed The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title_short The Age at Diagnosis of Autism Spectrum Disorder in Children in Japan
title_sort age at diagnosis of autism spectrum disorder in children in japan
topic Research Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5964587/
https://www.ncbi.nlm.nih.gov/pubmed/29853922
http://dx.doi.org/10.1155/2018/5374725
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