A Scalable Psychological Intervention to Reduce Psychological Distress Among Healthcare Workers

Rationale: The COVID-19 pandemic has impacted the mental health of healthcare workers (HCWs). This study combines two low-intensity psychological interventions developed by the World Health Organization (Doing What Matters \[DWM\] and Problem Management Plus \[PM+\]) into a stepped-care program for HCWs. Objective: The main objective is to evaluate the implementation and (cost-)effectiveness of the culturally and contextually adapted DWM/PM+ stepped-care programs amongst health care workers during the COVID-19 pandemic in terms of mental distress, resilience, wellbeing, health inequalities, and costs to health systems. Study design: Phase 2 (intervention study): pragmatic implementation trial with a single-blinded, randomized, parallel-group design. Phase 3: qualitative process evaluation consisting of individual interviews and focus group discussions (FGDs). Study population: Study phase 2: Health care workers with self-reported elevated psychological distress. Study phase 3: study participants with different trajectories through the trial (completers, non-completers, drop-outs, etc.), family members/close persons of participants, professionals, and facilitators of the DWM and PM+ intervention. Intervention- study phase 2: All participants (in both the treatment and the comparison group) will receive Psychological First Aid (PFA) and care as usual (CAU). In addition to PFA and CAU, the treatment group will receive the stepped-care intervention (DWM with or without PM+) in addition to CAU. The stepped-care intervention consists of DWM (step 1) and conditionally PM+ (step 2) if participants still meet criteria for psychological distress (Kessler Psychological Distress scale (K10) \>15.9) 1 month after having received DWM. Main study parameters/endpoints: Phase 2: Screening for in- and exclusion criteria will be interviewer-administered, in-person or through (video) calls. Online assessments will take place at baseline, at 2 weeks after having received DWM, at 1