The CELC arm is an integration of community engagement and learning collaborative approach which involves province-wide collaborative meetings for commune health stations (6 CHSs for each province) randomized into the CELC implementation condition. CELC CHSs will meet monthly initially for 3 months, followed by bi-monthly meetings for 12 months to engage in continuous quality improvement process, track implementation goals, problem solve implementation barriers, and engage in cross-site learning. This is in addition to usual implementation condition (supervision, workshops, technical assistance, and evidence-based toolkit)

This is an evidence-based training approach which involves 6-9 months of ongoing group supervision support from psychiatric hospital mental health specialist (psychiatrist, psychiatric nurse, or psychologist) for each community health station randomized to the ES condition. Supervision approach is structured and involves observation of sessions, feedback on fidelity and quality. Supervision support will be provided biweekly initially and monthly after completion of one practice case. This is in addition to usual implementation condition (workshops, technical assistance, and evidence-based toolkit)

Usual Implementation (UI) Control intervention that will be enhanced usual implementation and includes hybrid training workshops on basic implementation and training supports for Multicomponent Collaborative Care for Depression program, which is an evidence-based stepped collaborative care intervention for integrating depression care into primary care settings. It consists of six components: routine screening, diagnostic assessment, psychoeducation, antidepressant medication, adherence management, behavior activation therapy.

This implementation and training supports includes a series of online training modules, weekly webinars, and 3 one-day in-person workshops on collaborative care for depression (MCCD), limited technical assistance, and toolkit.

Hybrid Workshop Trainings on Stepped collaborative care model for depression that involves using a team-based approach to integrating depression care components (screening, psychoeducation, Behavior Activation therapy, and antidepressant medications) into primary care settings. This integration involves task-shifting mental health tasks from mental health specialist to community providers at the commune health stations.

Delivery of Project Dep and depression care components (Counts of depression care components delivered - # of screening, assessment, individual therapy, medication).

Delivery of Project Dep and depression care components (% of depression care components delivered - screening, assessment, individual therapy, medication).

Providers will be assessed by their supervisors for their overall competence in delivering the components of depression care every 6 months for 24 months. There are 18 items related to depression care skills (e.g., screening, psychoeducation, behavior activation, problem solving, medication management, etc.), Each item is scored on a 3 point scale from 1 to 3 (1-needs improvement, 2-satisfactory, 3-excellent). A total of 54 points can be obtained, with higher score indicating higher competence. N/A is used when a particular skill is not expected of that provider (i.e., community health workers are not expected to assess or manage medication). These ratings are conducted by supervisors at 0, 6, 12, and 24 months.

Patients will be assessed for depression using self-reported depression measure (PHQ). The Patient Health Questionnaire (PHQ) is a self-administered version of the PRIME-MD diagnostic instrument for common mental disorders. The PHQ-9 is the depression module, which scores each of the 9 DSM-IV criteria as "0" (not at all) to "3" (nearly every day). Total scores are used and they range from 0 to 27, with PHQ-9 scores of 5, 10, 15, and 20 represented mild, moderate, moderately severe, and severe depression, respectively.

Provider Participation in Training Activities (Count / % of workshop attendance, supervision meetings, and learning collaborative meetings).