| Enrolment | Allocation | Baseline | Intervention implementation | Endline |
---|---|---|---|---|---|
Timepoint | -t1 | Â | t0 | Â | t1 |
Enrolment: | |||||
 Identification of study clusters | X |  |  |  |  |
 Cluster randomisation and allocation |  | X |  |  |  |
 Adolescent eligibility screen |  |  | X |  |  |
 Participant informed consent |  |  | X |  |  |
Intervention: | |||||
 SMART |  |  |  | X |  |
 Control |  |  |  | X |  |
Assessments: | |||||
 Warwick Edinburgh Mental Wellbeing Scale |  |  | X |  | X |
 Schwarzer Self-Efficacy Scale |  |  | X |  | X |
 Rosenberg Self-Esteem Scale |  |  | X |  | X |
 Adolescent Emotion Regulation Strategies Questionnaire |  |  | X |  | X |
 Multidimensional Scale of Perceived Social Support |  |  | X |  | X |
 Patient Health Questionnaire 9-item—modified for adolescents |  |  | X |  | X |
 Generalised Anxiety Disorder 7-item |  |  | X |  | X |
 Functional impairment tool |  |  | X |  | X |