All patients received enhanced primary care, which included: (1) The nurses and doctors from the Family Health Teams were trained by Matrix team mental health professionals on clinical aspects of depression and anxiety, including diagnosis, appropriate medication interventions, psycho-education, and cognitive and problem solving therapy. (2) Given the high co-occurrence of anxiety and depression, the intervention was modified from the depression-only Chile model to emphasize co-occurring anxiety and depression in diagnoses, appropriate prescription of anxiolytics and antidepressants. (3) All providers received weekly group or individual consultation with a Matrix team mental health professional, either psychiatrist or psychologist. An qualitative study of participating Petrópolis Family Health Programme doctors and nurses demonstrated their satisfaction with the training.
Patients in the intervention arm received enhanced primary care plus a 9-session group intervention (seven sessions weekly then two sessions every 15 days). The intervention included two psycho-educational sessions with information about depression and anxiety disorders, two sessions on the development of pleasant activities including relaxation exercises, two sessions on solving problems therapy, one session on the problem of overcoming negative thoughts and emotions, one session on relapse prevention, and a final closure and review session which included a small party. The patients from the intervention arm also received additional outreach from the Family Health Teams, including home delivery of psychotropic medication when needed and active outreach and engagement by community workers if patients missed group sessions.