Ryousuke Koizumi1,2, Kensuke Koyama3,4, Masanori Wako1, Tetsuro Ohba1, Yoshihiro Takayama1, Hirotaka Haro1. 1. Department of Orthopedic Surgery, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan. 2. Department of Orthopedic Surgery, Kyonan Medical Center Fujikawa Hospital, 340-1 Kajikazawa, Fujikawa, Yamanashi, 400-0601, Japan. 3. Department of Orthopedic Surgery, Faculty of Medicine, University of Yamanashi, 1110 Shimokato, Chuo, Yamanashi, 409-3898, Japan. kkoyama@yamanashi.ac.jp. 4. Department of Orthopedic Surgery, Kyonan Medical Center Fujikawa Hospital, 340-1 Kajikazawa, Fujikawa, Yamanashi, 400-0601, Japan. kkoyama@yamanashi.ac.jp.
Abstract
OBJECTIVES: Treatments aimed at maintaining sustained clinical remission in rheumatoid arthritis (RA) patients have been recommended by several groups. Improvement and maintenance of functional status are also important for RA patients. The purpose of this study was to investigate the factors for maintaining long-term functional remission. METHODS: RA patients with usual care without specific protocols were included. Disease activity score using 28-joint count C-reactive protein (DAS28-CRP), simplified disease activity index (SDAI) score, and Health Assessment Questionnaire Disability Index (HAQ-DI) score was calculated every 3 months for 1 year. Patients were divided into the HAQ-DI remission (REM) group and the HAQ-DI non-remission (NO-REM) group; time-averaged values of these parameters were compared between groups. RESULTS: Of the 205 patients, 154 fulfilled the remission criteria. Time-averaged DAS28-CRP and SDAI score were significantly lower in the REM group than in the NO-REM group (1.66 vs 2.59, 3.54 vs 10.68, respectively; p < 0.001). Subsequent receiver-operating characteristic (ROC) analysis for estimation of remission indicated a cut-off value of 1.65 for time-averaged DAS28-CRP and 2.85 for time-averaged SDAI score. CONCLUSIONS: Previous reports showed that fulfillment of clinical remission increases the possibility of functional remission; the probability of which is higher in patients with sustained clinical remission. Sustained clinical remission is required to achieve sustained functional remission; the criteria for clinical remission may be more stringent. Key Points • Sustained deep clinical remission was required to achieve sustained functional remission.
OBJECTIVES: Treatments aimed at maintaining sustained clinical remission in rheumatoid arthritis (RA) patients have been recommended by several groups. Improvement and maintenance of functional status are also important for RApatients. The purpose of this study was to investigate the factors for maintaining long-term functional remission. METHODS:RApatients with usual care without specific protocols were included. Disease activity score using 28-joint count C-reactive protein (DAS28-CRP), simplified disease activity index (SDAI) score, and Health Assessment Questionnaire Disability Index (HAQ-DI) score was calculated every 3 months for 1 year. Patients were divided into the HAQ-DI remission (REM) group and the HAQ-DI non-remission (NO-REM) group; time-averaged values of these parameters were compared between groups. RESULTS: Of the 205 patients, 154 fulfilled the remission criteria. Time-averaged DAS28-CRP and SDAI score were significantly lower in the REM group than in the NO-REM group (1.66 vs 2.59, 3.54 vs 10.68, respectively; p < 0.001). Subsequent receiver-operating characteristic (ROC) analysis for estimation of remission indicated a cut-off value of 1.65 for time-averaged DAS28-CRP and 2.85 for time-averaged SDAI score. CONCLUSIONS: Previous reports showed that fulfillment of clinical remission increases the possibility of functional remission; the probability of which is higher in patients with sustained clinical remission. Sustained clinical remission is required to achieve sustained functional remission; the criteria for clinical remission may be more stringent. Key Points • Sustained deep clinical remission was required to achieve sustained functional remission.
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