Methods
In a statistician blinded, multicenter RCT including 139 participants from seven community and municipal mental health services in Denmark, participants were randomly assigned to 1) MA&R and standard mental health care or 2) standard mental health care. The MA&R intervention lasted 8 months and consisted of 11 group sessions, 11 individual sessions, and support to engage in activities. The primary outcome, activity engagement, was measured using Profile of Occupational Engagement in People with Severe Mental Illness (POES-S). Outcomes were measured at baseline and post-intervention follow-up.