ArticleCanadian journal of psychiatry. Revue canadienne de psychiatrie2017
Temporal Trends in the Prevalence and Incidence of Diagnosed ADHD in Children and Young Adults between 1999 and 2012 in Canada: A Data Linkage Study.
Article in Canadian journal of psychiatry. Revue canadienne de psychiatrie, 2017. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 29 papers, 3 of them syntheses that pooled it.
What it found
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.
Who cites it
29 citing papers in PubMed, 3 syntheses or guidelines pooled it, 70 citations in OpenAlex.
- Prevalence of attention-deficit hyperactivity disorder (ADHD): systematic review and meta-analysis.European psychiatry : the journal of the Association of European Psychiatrists · 2024Pooled it
- The relationship between persistent organic pollutants and Attention Deficit Hyperactivity Disorder phenotypes: Evidence from task-based neural activity in an observational study of a community sample of Canadian mother-child dyads.Environmental research · 2022Pooled it
- Prevalence and Risk Factors Associated With Attention-Deficit/Hyperactivity Disorder Among US Black Individuals: A Systematic Review and Meta-analysis.JAMA psychiatry · 2021Pooled it
- Is there evidence for additive neurocognitive deficits in adults with attention-deficit/hyperactivity disorder and co-occurring conditions?Archives of clinical neuropsychology : the official journal of the National Academy of Neuropsychologists · 2026Article
- Teacher-Reported Prevalence of FASD in Kindergarten and Association With Home Problems and Early Intervention in 2010-2015 and 2016-2020.Child psychiatry and human development · 2026Article
- Association between high-intensity antibiotic prescribing and prescribing of psychotropic drugs in children: a population-based study.BMJ paediatrics open · 2026Article
- Cluster B personality disorders and psychotropic medications: a focused analysis of trends and patterns across sex and age groups.Social psychiatry and psychiatric epidemiology · 2025Article
- Obstetric mode of delivery and risk of attention deficit hyperactivity disorder in children: insights from the Quebec pregnancy cohort.BMC pregnancy and childbirth · 2025Article
- Early identification of children with Attention-Deficit/Hyperactivity Disorder (ADHD).PLOS digital health · 2024Article
- Prevalence and Incidence Trends of Attention Deficit/Hyperactivity Disorder in Children and Youth Aged 1-24 Years in Ontario, Canada: A Validation Study of Health Administrative Data Algorithms: Tendances de la prévalence et de l'incidence du trouble de déficit de l'attention/hyperactivité chez les enfants et les jeunes âgés de 1 à 24 ans, en Ontario, Canada: une étude de validation des algorithmes de données administratives de santé.Canadian journal of psychiatry. Revue canadienne de psychiatrie · 2024Article
- ADHD medications use and risk of mortality and unintentional injuries: a population-based cohort study.Translational psychiatry · 2024Article
- Barriers to care for mental health conditions in Canada.PLOS mental health · 2024Article
- Sex difference contributes to phenotypic diversity in individuals with neurodevelopmental disorders.Frontiers in pediatrics · 2023Article
- Psychotropic medication use pre and post-diagnosis of cluster B personality disorder: a Quebec's health services register cohort.Frontiers in psychiatry · 2023Article
- Article
- Modeling electronic health record data using an end-to-end knowledge-graph-informed topic model.Scientific reports · 2022Article
- Attention-deficit hyperactivity disorder in children born to mothers with infertility: a population-based cohort study.Human reproduction (Oxford, England) · 2022Article
- A Review of Canadian Diagnosed ADHD Prevalence and Incidence Estimates Published in the Past Decade.Brain sciences · 2022Review
- Article
- Morbidities and mortality of diagnosed attention deficit hyperactivity disorder (ADHD) over the youth lifespan: A population-based retrospective cohort study.International journal of methods in psychiatric research · 2022Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
11 authors at 9 institutions in 3 countries.
Funding
Abstract
objectiveThere is a need for the routine monitoring of treated attention-deficit hyperactivity disorder (ADHD) for timely policy making. The objective is to report and assess over a decade the prevalence and incidence of diagnosed ADHD in Canada.
methodsAdministrative linked patient data from the provinces of Manitoba, Ontario, Quebec, and Nova Scotia were obtained from the same sources as the Canadian Chronic Diseases Surveillance Systems to assess the prevalence and incidence of a primary physician diagnosis of ADHD ( ICD-9 and ICD-10 codes: 314, F90.x) for consultations in outpatient and inpatient settings (Med-Echo in Quebec, the Canadian Institute of Health Information Discharge Abstract Database in the 3 other provinces, plus the Ontario Mental Health Reporting System). Dates of service, diagnosis, and physician specialty were retained. The estimates were presented in yearly brackets between 1999-2000 and 2011-2012 by age and sex groups.
resultsThe prevalence of ADHD between 1999 and 2012 increased in all provinces and for all groups. The prevalence was approximately 3 times higher in boys than in girls, and the highest prevalence was observed in the 10- to 14-year age group. The incidence increased between 1999 and 2012 in Manitoba, Quebec, and Nova Scotia but remained stable in Ontario. Incident cases were more frequently diagnosed by general practitioners followed by either psychiatrists or paediatricians depending on the province.
conclusionThe prevalence and incidence of diagnosed ADHD did not increase similarly across all provinces in Canada between 1999 and 2012. Over half of cases were diagnosed by a general practitioner.
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Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.