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[Research in patient care in the rheumatology specialty network--what is the benefit for improving patient care?].

One of the areas of research in the Rheumatology Competence Network deals with health services research. It evaluates the structures and outcomes of rheumatological care. The paper presents selected results from the projects in the field of health services research. Data for rheumatoid arthritis are presented according to the criteria for the inclusion of diseases in new health care programs ("Disease Management"). The national database of the German Collaborative Arthritis Centers and cohort studies show the high individual and economic burden of disease in rheumatoid arthritis. Treatment by rheumatologists and non-rheumatologists differs greatly and leads to different outcomes. There is great potential for improvement. Data on practice variation within the rheumatologic subspecialty are used for quality management. The involvement of rheumatology into new concepts of care offers the chance to show the effectiveness of rheumatologic care and to enhance existing forms of cooperation.