Nurse-led care versus physician-led care in the management of rheumatoid arthritis and psoriatic arthritis (StaerkeR): study protocol for a multi-center randomized controlled trial

Background: In Germany, the care of patients with inflammatory arthritis could be improved. Although specialized rheumatology nurses could take over substantial aspects of patient care, this hardly occurs in Germany. Thus, the aim of the study is to examine structured nursing consultation in rheumatology practices. Methods/design: In total, 800 patients with a stable course of rheumatoid arthritis or psoriatic arthritis in 20 centers in North Rhine-Westphalia and Lower Saxony will be randomized to either nurse-led care or standard care. Participating nurses will study for a special qualification in rheumatology and trial-specific issues. It is hypothesized that nurse-led care is non-inferior to standard care provided by rheumatologists with regard to a reduction of disease activity (DAS28) while it is hypothesized to be superior regarding changes in health-related quality of life (EQ-5D-5L) after 1 year. Secondary outcomes include functional capacity, patient satisfaction with treatment, and resource consumption. Discussion: Since there is insufficient care of rheumatology patients in Germany, the study may be able to suggest improvements. Nurse-led care has the potential to provide more efficient and effective patient care. This includes a more stringent implementation of the treat-to-target concept, which may lead to a higher percentage of patients reaching their treatment targets, thereby improving patient-related outcomes, such as quality of life, functional capacity, and participation. Additionally, nurse-led care may be highly cost-effective. Finally, this project may form the basis for a sustainable implementation of nurse-led care in standard rheumatology care in Germany.