TY - JOUR AU - C. de Oliveira AU - J. Mason AU - B. Amani AU - G. Liddell AU - P. Szatmari AU - J. Henderson AU - D. Courtney A1 - AB - INTRODUCTION: Depressive disorders in adolescents are highly prevalent and debilitating and are a risk factor for self-harm and death by suicide. In the context of recovery from the COVID-19 pandemic, strained healthcare resources are compounded by an increased demand for treatment services for adolescents with depression. The objective of this study protocol is to delineate the proposed economic evaluation of an integrated care pathway for depression in adolescents within the Care for Adolescents who Received Information 'Bout Outcomes, 2nd iteration (CARIBOU-2) non-randomised, cluster-controlled trial. METHODS AND ANALYSIS: Two economic evaluations of the CARIBOU-2 trial (n=300) will be conducted-a cost-effectiveness analysis and a cost-utility analysis. In the cost-effectiveness analysis, we will examine the primary clinical outcome of the trial, change in the Mood and Feelings Questionnaire total score. In the cost-utility analysis, the clinical outcome will be quality-adjusted life-years, a generic measure of health burden. Data on the resources and respective costs required to deliver the intervention will be collected by the research team. Data on resource use post-intervention will be obtained from a mix of administrative data holdings and self-report; relevant unit costs will be obtained from existing data sources. The outcome of both economic evaluations will be the incremental cost-effectiveness ratio. Relevant sensitivity analyses will be undertaken, and cost-effectiveness acceptability curves will be produced to characterise any sources of uncertainty in the analysis. Equity considerations will also be examined, where relevant. ETHICS AND DISSEMINATION: Ethical approval for the larger CARIBOU-2 trial, including the economic evaluation, has been obtained by the Centre for Addiction and Mental Health as well as site-level ethics boards (019/2021; Centre for Addiction and Mental Health). All participants will provide informed consent for their data to be analysed and reported. The results of the main trial and the economic evaluation will be submitted for publication in a peer-reviewed journal and shared with relevant policy makers across Canada. TRIAL REGISTRATION NUMBER: NCT05142683. AD - Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada claire.deoliveira@camh.ca.; Campbell Family Mental Health Research Institute, Centre for Addiction and Mental Health , Toronto, Ontario, Canada.; Cundill Centre for Child and Youth Depression, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.; Institute of Health Policy, Management and Evaluation, Dalla Lana School of Public Health, University of Toronto, Toronto, Ontario, Canada.; Department of Public Health and Caring Sciences, Uppsala University, Uppsala, Ontario, Canada.; Institute for Mental Health Policy Research, Centre for Addiction and Mental Health, Toronto, Ontario, Canada.; Neurosciences & Mental Health, The Hospital for Sick Children, Toronto, Ontario, Canada.; Department of Psychiatry, University of Toronto, Toronto, Ontario, Canada.; Margaret and Wallace McCain Centre for Child, Youth and Family Mental Health, Centre for Addiction and Mental Health, Toronto, Ontario, Canada. AN - 40379352 BT - BMJ Open C5 - Healthcare Disparities; Financing & Sustainability CP - 5 DA - May 15 DO - 10.1136/bmjopen-2024-092541 DP - NLM ET - 20250515 IS - 5 JF - BMJ Open LA - eng N2 - INTRODUCTION: Depressive disorders in adolescents are highly prevalent and debilitating and are a risk factor for self-harm and death by suicide. In the context of recovery from the COVID-19 pandemic, strained healthcare resources are compounded by an increased demand for treatment services for adolescents with depression. The objective of this study protocol is to delineate the proposed economic evaluation of an integrated care pathway for depression in adolescents within the Care for Adolescents who Received Information 'Bout Outcomes, 2nd iteration (CARIBOU-2) non-randomised, cluster-controlled trial. METHODS AND ANALYSIS: Two economic evaluations of the CARIBOU-2 trial (n=300) will be conducted-a cost-effectiveness analysis and a cost-utility analysis. In the cost-effectiveness analysis, we will examine the primary clinical outcome of the trial, change in the Mood and Feelings Questionnaire total score. In the cost-utility analysis, the clinical outcome will be quality-adjusted life-years, a generic measure of health burden. Data on the resources and respective costs required to deliver the intervention will be collected by the research team. Data on resource use post-intervention will be obtained from a mix of administrative data holdings and self-report; relevant unit costs will be obtained from existing data sources. The outcome of both economic evaluations will be the incremental cost-effectiveness ratio. Relevant sensitivity analyses will be undertaken, and cost-effectiveness acceptability curves will be produced to characterise any sources of uncertainty in the analysis. Equity considerations will also be examined, where relevant. ETHICS AND DISSEMINATION: Ethical approval for the larger CARIBOU-2 trial, including the economic evaluation, has been obtained by the Centre for Addiction and Mental Health as well as site-level ethics boards (019/2021; Centre for Addiction and Mental Health). All participants will provide informed consent for their data to be analysed and reported. The results of the main trial and the economic evaluation will be submitted for publication in a peer-reviewed journal and shared with relevant policy makers across Canada. TRIAL REGISTRATION NUMBER: NCT05142683. PY - 2025 SN - 2044-6055 SP - e092541 ST - Protocol for the economic evaluation of the Care for Adolescents who Received Information 'Bout Outcomes, 2nd iteration (CARIBOU-2) non-randomised, cluster-controlled trial of an integrated care pathway for depression in adolescents T1 - Protocol for the economic evaluation of the Care for Adolescents who Received Information 'Bout Outcomes, 2nd iteration (CARIBOU-2) non-randomised, cluster-controlled trial of an integrated care pathway for depression in adolescents T2 - BMJ Open TI - Protocol for the economic evaluation of the Care for Adolescents who Received Information 'Bout Outcomes, 2nd iteration (CARIBOU-2) non-randomised, cluster-controlled trial of an integrated care pathway for depression in adolescents U1 - Healthcare Disparities; Financing & Sustainability U3 - 10.1136/bmjopen-2024-092541 VL - 15 VO - 2044-6055 Y1 - 2025 ER -