Moving evidence-based interventions to populations: a case study using social workers in primary care.

This article describes a study to expand a proven evidence- based practice for depression to a population-based intervention for frail older adults. Problem-Solving Therapy (PST) has been proven effective in reducing depression and other mental health conditions in cognitively intact adults in many studies. The current study employs a randomized controlled trial to test the effectiveness of a social work intervention for frail older adults that uses PST to address depression and other psychosocial issues. The intervention employs Master's trained social workers integrated into a large primary care practice. The study population is comprised of home-dwelling older adults with multiple chronic conditions, a recent history of unnecessary hospitalizations, and no more than mild cognitive impairment.