Founded in 1997, Arbor Research Collaborative for Health, earlier known as URREA, is a nonprofit organization in Ann Arbor in Michigan. The organization conducts studies in epidemiology and public health. Its project, Dialysis Outcomes and Practice Patterns Study, is a study of hemodialysis practice. Arbor Research Collaborative for Health specializes in biostatistical analysis and clinical practice, as well as the management and integration of large data sets. The organization offers research publications to medical societies, clinicians and the federal agencies. It conducts various studies for the U.S. Department of Health & Human Services. The organization s project, the Scientific Registry of Transplant Recipients, performs analyses that measure the efficiency and fairness of transplantation.