Nicotine vaping is common among children and youth, and even more so among those with mental health concerns. Identifying and managing nicotine vaping in child and youth mental health treatment settings is key to addressing this modifiable risk factor for poorer physical and mental health in young people. Recommendations exist for screening, assessment and treatment of youth vaping; however, it remains unclear whether current practices in child and youth mental health programmes align with recommended standards.

An explanatory sequential mixed methods design with three stages will be employed. In the first stage, a cross-sectional survey will be distributed to all eligible Canadian hospitals to identify practices in assessment and treatment of nicotine vaping within their child and youth mental health and addictions programmes. This survey will also assess barriers and facilitators for the uptake of the 2021 Canadian Paediatric Society recommendations on management of youth vaping. Semi-structured focus groups and interviews will be conducted in stage two, with clinicians, managers, youth and caregivers. Qualitative data will be analysed using a reflexive thematic approach. In stage three, findings and proposed behaviour change interventions will be reviewed at a knowledge mobilisation meeting with the goal of developing a national knowledge mobilisation plan to improve assessment and treatment of youth vaping in hospital-based mental health and addictions programmes.

This study has received ethics approval from the Research Ethics Board at the Children’s Hospital of Eastern Ontario (Protocol #25/19X). Participants will provide informed consent prior to participating. Results will be published in peer-reviewed journals and presented at scientific conferences. Summaries will be provided to the funders of the study and to participating hospitals.