Of the many innovations in health care delivery proposed in the context of health reform for those with chronic diseases such as diabetes, the group visit model is relatively easy to implement and is effective for improving health outcomes and patient and provider satisfaction, with a neutral to positive effect on health care costs. This article describes the evolution of group visits for those with diabetes, the theory underlying group visits for patients with chronic medical conditions, and the existing evidence for the effectiveness of this model. It also addresses implementation of groups in practice, with an emphasis on the practical aspects of program implementation, integration of behavioral expertise into medical groups, individualization in various practice settings, and reimbursement issues.

Group interventions for individuals facing cancer or HIV disease have drawn considerable attention among researchers and clinicians over the past 20 years. There is growing evidence that group services may be helpful, but which interventions are most effective for participants at which phases in the trajectory of disease has been less clear. Moreover, professionals working in different intervention settings (e.g., primary prevention vs. clinical care) and different disease sites (cancer vs. HIV disease) often have little awareness of relevant advances in other fields. Efforts to integrate findings in the literature may accelerate research and advance the standard of clinical care. The current article, the first in a series of four special reports, critically evaluates the efficacy of group interventions led by professional or trained facilitators for individuals confronted by cancer or HIV, across the spectrum of illness from elevated risk through advanced disease. We examine psychosocial and functional outcomes for different interventions directed toward different patient subgroups, trace common themes, highlight limitations, and offer recommendations for further research.