Six-month prevalence of mental disorders and service contacts among children and youth in Ontario: evidence from the 2014 Ontario Child Health Study
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Objectives: To present the 6-month prevalence and sociodemographic correlates of mental disorders and mental health–related service contacts in a sample of children (4 to 11 years) and youth (12 to 17 years) in Ontario. Methods: The 2014 Ontario Child Health Study is a provincially representative survey of 6537 families with children aged 4 to 17 years in Ontario. DSM-IV-TR mental disorders were assessed using the Mini International Neuropsychiatric Interview for Children and Adolescents (MINI-KID) and included mood (major depressive episode), anxiety (generalized anxiety, separation anxiety, social phobia, specific phobia), and behaviour disorders (attention-deficit/hyperactivity disorder, oppositional-defiant disorder, conduct disorder).The MINI-KID was administered independently to the primary caregiver and youth aged 12 to 17 years in the family’s home. Results: Past 6-month prevalence of any mental disorder ranged from 18.2% to 21.8% depending on age and informant. Behaviour disorders were the most common among children, and anxiety disorders were the most common among youth. Among children and youth with a parent-identified mental disorder, 25.6% of children and 33.7% of youth had contact with a mental health provider. However, 60% had contact with one or more of the providers or service settings assessed, most often through schools. Conclusions: Between 18% and 22% of children and youth in Ontario met criteria for a mental disorder but less than one-third had contact with a mental health provider. These findings provide support for strengthening prevention and early intervention efforts and enhancing service capacity to meet the mental health needs of children and youth in Ontario.
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Anxiety disorders are the most common mental health conditions during adolescence.
“Research consistently shows that anxiety disorders (ADs) are the most common mental health conditions during adolescence [2–8]”
From Acceptance and commitment therapy as a transdiagnostic approach to adolescents with different anxiety disorders: study protocol. (2025) · cites this paper as [3]
Generalized Anxiety Disorder has 12-month prevalence estimates of 2.1% and 6-month prevalence estimates of 9.7% in adolescence.
“12-month prevalence estimates of 2.1% [20] and 6-month prevalence estimates of 9.7% [3] have been reported for GAD.”
From Acceptance and commitment therapy as a transdiagnostic approach to adolescents with different anxiety disorders: study protocol. (2025) · cites this paper as [3]
Adolescence is a critical phase of human development where mental health problems, particularly anxiety disorders, are highly prevalent and often persist and/or develop into other disorders throughout an individual's life.
“Adolescence is a critical phase of human development where mental health problems, particularly ADs, are highly prevalent (e.g., [3, 4]) and often persist and/or develop into other disorders throughout an individual's life (e.g., [14, 21]).”
From Acceptance and commitment therapy as a transdiagnostic approach to adolescents with different anxiety disorders: study protocol. (2025) · cites this paper as [3]
Anxiety disorders are the most common childhood mental disorders, with overall prevalence estimated at 6.5%.
“With overall prevalence estimated at 6.5%, anxiety disorders are the most common childhood mental disorders, making them a crucial public health concern.”
From Six decades of preventing and treating childhood anxiety disorders: a systematic review and meta-analysis to inform policy and practice (2019) · cites this paper as [2]
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- Authors
- Georgiades, K., Duncan, L., Wang, L., Comeau, J., Boyle, M. H., & 2014 Ontario Child Health Study Team
- Affiliations
- McMaster University (CA)
- Western University (CA)
- Corresponding author
- Georgiades, Katholiki
- Venue
- The Canadian Journal of Psychiatry
- Publisher
- SAGE Publications
- Published
- 2019-04
- Volume
- 64
- Issue
- 4
- Pages
- 246-255
- ISSN
- 0706-7437 (ISSN-L)
- 1497-0015
- PMC
- PMC6463361
- OpenAlex
- W2936456428
- Cited by
- 293
- References
- 41
- Citations by year
- 2026: 30 · 2025: 36 · 2024: 51 · 2023: 39 · 2022: 49 · 2021: 50 · 2020: 24 · 2019: 14
- FWCI
- 43.04
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Locations
- The Canadian Journal of Psychiatry (publishedVersion, cc-by-nc)
- Europe PMC (PubMed Central) (publishedVersion, cc-by-nc)
- PubMed Central (publishedVersion, cc-by-nc)
- PubMed (publishedVersion)
- White Rose Research Online (University of Leeds, The University of Sheffield, University of York) (acceptedVersion)
- Scholarship@Western (Western University) (submittedVersion)
- Funders
- Institute of Human Development, Child and Youth Health (125941)
- Topics
- Social Sciences › Psychology › Social Psychology › Mental Health Treatment and Access
- Social Sciences › Psychology › Clinical Psychology › Child and Adolescent Psychosocial and Emotional Development
- Health Sciences › Health Professions › General Health Professions › Health and Medical Studies
- Keywords
- child and adolescent mental disorders, prevalence of mental disorders, mental health service utilization, help-seeking, behaviour disorders, anxiety disorders, attention deficit hyperactivity disorder, oppositional defiant disorder, conduct disorder, major depressive episode, sociodemographic correlates, school-based mental health services, Ontario Child Health Study
- MeSH terms
- Child Health, Adolescent, Mental Disorders, Child, Child, Preschool, Female, Health Surveys, Humans, Male, Mental Health Services, Ontario, Prevalence
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