ADHD in a representative sample of the Brazilian population: estimated prevalence and comparative adequacy of criteria between adolescents and adults according to the item response theory
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Background Attention deficit hyperactivity disorder (ADHD) is a clinically significant disorder in adulthood, but current diagnostic criteria and instruments do not seem to adequately capture the complexity of the disorder in this developmental phase. Accordingly, there are limited data on the proportion of adults affected by the disorder, specially in developing countries. Method We assessed a representative household sample of the Brazilian population for ADHD with the Adult ADHD Self-report Scale (ASRS) Screener, and evaluated the instrument according to the Rasch model of item response theory. Results The sample was comprised by 3007 individuals, and the overal prevalence of positive screeners for ADHD was 5.8% [95% confidence interval (CI), 4.8-7.0]. Rasch analyses revealed the misfitt of the overall sample to expectations of the model. The evaluation of the sample stratified by age revealed that data for adolescents showed a signficant fittnes to the model expectations, while items completed by adults were not adequated. Conclusions The lack of fitness to the model for adult respondents challenges the possibility of a linear transformation of the ordinal data into interval measures and the utilization of parametric analyses of data. This result suggests that diagnostic criteria and instruments for adult ADHD must take into account a developmental perspective. Moreover, it calls for further evaluation of currently employed research methods in light of modern theories of…
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A study from Brazil provided an adjusted prevalence of 6.1% (4.50, 8.30) for adults older than 44 years of age based on an ADHD screener.
“A study from Brazil (Polanczyk et al., 2010) provided an adjusted prevalence of 6.1 % (4.50, 8.30) for adults older than 44 years of age based on an ADHD screener.”
From Prevalence of attention-deficit/hyperactivity disorder in older adults: a systematic review and meta-analysis (2020) · cites this paper as Polanczyk et al., 2010
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- Authors
- Polanczyk, G., Laranjeira, R., Zaleski, M., Pinsky, I., Caetano, R., & Rohde, L. A.
- Affiliations
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (BR)
- Venue
- International Journal of Methods in Psychiatric Research
- Publisher
- Wiley
- Published
- 2010-07-19
- Volume
- 19
- Issue
- 3
- Pages
- 177-184
- ISSN
- 1049-8931 (ISSN-L)
- 1557-0657
- PMC
- PMC6878319
- OpenAlex
- W2170777785
- Cited by
- 53
- References
- 31
- Citations by year
- 2025: 2 · 2024: 4 · 2023: 3 · 2022: 2 · 2021: 2 · 2020: 3 · 2019: 2 · 2018: 11 · 2017: 2 · 2016: 2 · 2015: 6 · 2014: 7 · 2013: 3 · 2012: 4
- FWCI
- 1.53
- Type
- journal article
- Language
- en
- Open access
- green
- www.ncbi.nlm.nih.gov
- Locations
- International Journal of Methods in Psychiatric Research (publishedVersion)
- Europe PMC (PubMed Central) (publishedVersion)
- PubMed Central (publishedVersion)
- PubMed (publishedVersion)
- LA Referencia (Red Federada de Repositorios Institucionales de Publicaciones Científicas) (publishedVersion, other-oa)
- Scientific Electronic Library Online (São Paulo Research Foundation, Latin American and Caribbean Center on Health Sciences Information, Conselho Nacional de Desenvolvimento Científico e Tecnológico) (publishedVersion)
- Americanae (AECID Library) (submittedVersion)
- Funders
- Australian Government
- Governo Brasil
- Topics
- Health Sciences › Medicine › Psychiatry and Mental health › Attention Deficit Hyperactivity Disorder
- Social Sciences › Decision Sciences › Management Science and Operations Research › Psychometric Methodologies and Testing
- Social Sciences › Psychology › Experimental and Cognitive Psychology › Mental Health Research Topics
- Keywords
- adult ADHD, ADHD prevalence, Adult ADHD Self-Report Scale, item response theory, Rasch model, adolescents versus adults, psychometric validation, Brazilian population
- MeSH terms
- Adolescent, Adult, Age Factors, Attention Deficit Disorder with Hyperactivity, Brazil, Female, Humans, Male, Mass Screening, Psychometrics, Surveys and Questionnaires, Prevalence, Diagnostic and Statistical Manual of Mental Disorders, Young Adult
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