Health economic evaluation of self-injection of biologics in patients with rheumatoid arthritis using a Japanese real-world web-based survey

Over 80% of patients with RA selected SI to administer bDMARDs, and their total annual out-of-pocket medical expenses were lower than those of patients who selected non-SI owing to the reduced frequency of hospital visits. The results of our study may provide useful insights into the selection of self-injectable bDMARDs for therapeutic decision-making based on out-of-pocket medical expenses.