Outcomes and associated clinical features of people with eating disorders participating in residential treatment facilities: a scoping review

Residential treatment programs for eating disorders (EDs) have gained popularity in recent years, expanding beyond the United States to countries such as Canada, Italy, and the United Kingdom. These programs offer a "home-like" environment where individuals reside for several weeks or months, emphasising both physical restoration and psychological recovery. This scoping review aimed to provide an update since the most recent reviews on the literature regarding outcomes of residential treatment programs for EDs and to explore clinical features that were associated with these outcomes. Methods used followed the Joanna Briggs Institute guidelines for scoping reviews. A systematic search of electronic databases was conducted, and 12 studies met the inclusion criteria. All studies reported improvements in various outcomes from admission to discharge, including changes in eating psychopathology, weight restoration, depression, anxiety, and quality of life. Additionally, three studies reported positive outcomes at intervals after discharge and three predictive factors (self-compassion, personality organisation, and resistance to emotional vulnerability) were reported in a small number of studies. While residential treatment facilities consistently showed positive outcomes, the review highlights the need for randomised controlled studies to establish the efficacy of these programs for EDs. Future research should include controlled studies comparing residential facilities to other treatment settings and incorporate long-term follow-up outcomes and further studies of emergent predictive factors identified in this review.