Trends in Diagnosed Attention-Deficit/Hyperactivity Disorder Among Children, Adolescents, and Adults in Japan From April 2010 to March 2020
Open accessAbstract
This cohort study assesses trends in incidence of attention-deficit/hyperactivity disorder (ADHD) among children, adolescents, and adults in Japan from 2010 to 2019.
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In Japan, 40% of all new ADHD diagnoses (2010-2019) were made in adults aged ≥20 years.
“In Japan, an analysis of the national health insurance registry (2010–2019) showed that 40% of all new ADHD diagnoses were made in adults (aged ≥20 years)”
From ADHD in Adulthood: Clinical Presentation, Comorbidities, and Treatment Perspectives (2025) · cites this paper as [37]
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Cites
The Prevalence of DSM-IV Attention-Deficit/Hyperactivity Disorder: A Meta-Analytic Review
Willcutt, E. G. (2012) · Neurotherapeutics · doi:10.1007/s13311-012-0135-8 · Cited by 2,160 · see citing works
Sibley, M. H., Mitchell, J. T., & Becker, S. P. (2016) · The Lancet Psychiatry · doi:10.1016/s2215-0366(16)30190-0 · Cited by 268 · see citing works
Chung, W. W., Jiang, S., Paksarian, D., Nikolaidis, A., Castellanos, F. X., Merikangas, K. R., & Milham, M. P. (2019) · JAMA Network Open · doi:10.1001/jamanetworkopen.2019.14344 · Cited by 240 · see citing works
Under Diagnosis of Adult ADHD: Cultural Influences and Societal Burden
Asherson, P., Akehurst, R., Kooij, J. J. S., Huss, M., Beusterien, K., Sasané, R., Gholizadeh, S., & Hodgkins, P. (2012) · Journal of Attention Disorders · doi:10.1177/1087054711435360 · Cited by 189 · see citing works
Trends in Autism Spectrum Disorder Diagnoses in Japan, 2009 to 2019
Sasayama, D., Kuge, R., Toibana, Y., & Honda, H. (2021) · JAMA Network Open · doi:10.1001/jamanetworkopen.2021.9234 · Cited by 78 · see citing works
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Okada, T., Sotodate, T., Ogasawara-Shimizu, M., & Nishigaki, N. (2024) · Frontiers in Psychiatry · doi:10.3389/fpsyt.2024.1359872 · Cited by 14 · see citing works
ADHD in Adulthood: Clinical Presentation, Comorbidities, and Treatment Perspectives
Bogdańska-Chomczyk, E., Majewski, M. K., & Kozłowska, A. (2025) · International Journal of Molecular Sciences · doi:10.3390/ijms262211020 · Cited by 15 · see citing works
“National insurance claims (N = 838,265 new ADHD) ≥ 20 years 40% of all new ADHD cases were in adults [37] Global statistics and data on late diagnosis also mask significant demographic issues, the most important of which is the systemic underdiagnosis of women.”
- Authors
- Sasayama, D., Kuge, R., Toibana, Y., & Honda, H.
- Affiliations
- Shinshu University (JP)
- Corresponding author
- Sasayama, Daimei
- Venue
- JAMA Network Open
- Publisher
- American Medical Association (AMA)
- Published
- 2022-09-30
- Volume
- 5
- Issue
- 9
- Pages
- e2234179
- ISSN
- 2574-3805 (ISSN-L)
- PMC
- PMC9526082
- OpenAlex
- W4298087594
- Cited by
- 26
- References
- 5
- Citations by year
- 2026: 8 · 2025: 10 · 2024: 5 · 2023: 3
- FWCI
- 2.93
- Type
- journal article
- Language
- en
- Open access
- gold
- doi.org
- Licence
- cc-by
- Locations
- JAMA Network Open (publishedVersion, cc-by)
- PubMed Central (publishedVersion, cc-by)
- PubMed (publishedVersion)
- Institutional Repositories DataBase (IRDB) (submittedVersion, cc-by)
- SOAR (Shinshu University) (submittedVersion, other-oa)
- Funders
- Pfizer
- Ministry of Health, Labour and Welfare
- Astellas Pharma
- Shionogi
- Otsuka Pharmaceutical
- Pfizer Japan
- Japan Society for the Promotion of Science (21K07542)
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Life Sciences › Neuroscience › Cognitive Neuroscience › Autism Spectrum Disorder Research
- Social Sciences › Psychology › Clinical Psychology › Child and Adolescent Psychosocial and Emotional Development
- Keywords
- attention deficit hyperactivity disorder, ADHD incidence, temporal trends, children, adolescents, adults, Japan
- MeSH terms
- Adolescent, Adult, Attention Deficit Disorder with Hyperactivity, Child, Humans, Japan, Prevalence
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