The feasibility of existing JADAS10 cut-off values in clinical practice : a study of data from The Finnish Rheumatology Quality Register
Backström, M.; Salo, H.; Kärki, J.; Aalto, K.; Rebane, K.; Levälampi, T.; Grönlund, M-M.; Kröger, L.; Pohjankoski, H.; Hietanen, M.; Korkatti, K.; Kuusalo, L.; Rantalaiho, V.; Huhtakangas, J.; Relas, H.; Pääkkö, T.; Löyttyniemi, E.; Sokka-Isler, T.; Vähäsalo, P. (2023-04-14)
Backström, M., Salo, H., Kärki, J. et al. The feasibility of existing JADAS10 cut-off values in clinical practice: a study of data from The Finnish Rheumatology Quality Register. Pediatr Rheumatol 21, 35 (2023). https://doi.org/10.1186/s12969-023-00814-x
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https://urn.fi/URN:NBN:fi-fe20230823103656
Tiivistelmä
Abstract
Background: The ten-joint juvenile arthritis disease activity score (JADAS10) is designed to measure the level of disease activity in non-systemic juvenile idiopathic arthritis by providing a single numeric score. The clinical JADAS10 (cJADAS10) is a modification of the JADAS10 that excludes erythrocyte sedimentation rate (ESR). Three different sets of JADAS10/cJADAS10 cut-offs for disease activity states have been published, i.e., the Backström, Consolaro, and Trincianti cut-offs. The objective of this study was to investigate the performance of existing JADAS10 cut-offs in real-life settings using patient data from The Finnish Rheumatology Quality Register (FinRheuma).
Methods: Data were collected from the FinRheuma register. The proportion of patients with an active joint count (AJC) above zero when classified as being in clinically inactive disease (CID) or low disease activity (LDA) groups according to existing JADAS10/cJADAS10 cut-off levels were analyzed.
Results: A significantly larger proportion of the patients classified as being in CID had an AJC > 0 when using the JADAS10/cJADAS10 cut-offs by Trincianti et al. compared to those for the other cut-offs. In the LDA group, a significantly larger proportion of the polyarticular patients (35%/29%) had an AJC of two when Trincianti JADAS10/cJADAS10 cut-offs were used compared with when Backström (11%/10%) and Consolaro (7%/3%) JADAS10/cJADAS10 cut-offs were used.
Conclusions: We found the cut-offs proposed by Consolaro et al. to be the most feasible, since these cut-off levels for CID do not result in the misclassification of active disease as remission, and the proportion of patients with AJC > 1 in the LDA group is lowest using these cut-offs.
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