Youth Aware of Mental Health for Danish School Adolescents: Study Protocol for a Cluster-Randomized Feasibility Pilot Trial.

The trial is designed as a two-armed cluster-randomized feasibility pilot study of the YAM program in Danish public schools.

• The trial involves 8-10 public schools across Denmark.
• Participants are 8th-9th grade students.
• The intervention arm receives the YAM program in addition to curriculum as usual.
• The control arm receives curriculum as usual plus YAM posters.

The study has two primary objectives: investigating feasibility, acceptability, and fidelity of YAM delivery, and exploring preliminary effects on self-reported outcomes.

• Primary outcomes are participation rates, program adherence, and questionnaire completion.
• Secondary outcomes include suicidal behavior, psychological distress, well-being, help-seeking intentions, and suicide-related stigma.
• Data are collected at baseline, 3-month, and 6-month follow-up.
• Analyses will use descriptive statistics and multi-level models to estimate preliminary effects.

The trial timeline spans from August 2024 through July 2025.

• Recruitment began in August 2024.
• The 6-month follow-up assessment is scheduled to conclude in July 2025.
• Three assessment time points are included: baseline, 3-month follow-up, and 6-month follow-up.

The trial is intended to inform potential adaptations and guide future implementation designs for school-based mental health strategies in Denmark.

• The trial provides insight into the practical delivery of YAM in Danish public schools.
• Findings are expected to guide future implementation designs for school-based mental health strategies.
• The study addresses whether YAM can be feasibly and acceptably delivered within the Danish public school context.