@article {Glinatsi2480, author = {Daniel Glinatsi and Siri Lillegraven and Espen A. Haavardsholm and Iris Eshed and Philip G. Conaghan and Charles Peterfy and Fr{\'e}d{\'e}rique Gandjbakhch and Paul Bird and Pernille B{\o}yesen and Uffe M. D{\o}hn and Harry K. Genant and Mikkel {\O}stergaard}, title = {Validation of the OMERACT Magnetic Resonance Imaging Joint Space Narrowing Score for the Wrist in a Multireader Longitudinal Trial}, volume = {42}, number = {12}, pages = {2480--2485}, year = {2015}, doi = {10.3899/jrheum.141009}, publisher = {The Journal of Rheumatology}, abstract = {Objective. To assess the intrareader and interreader agreement and sensitivity to change of the Outcome Measures in Rheumatology (OMERACT) Rheumatoid Arthritis Magnetic Resonance Imaging Joint Space Narrowing (RAMRIS-JSN) score in the rheumatoid arthritis (RA) wrist in a longitudinal multireader exercise.Methods Coronal T1-weighted MR image sets of 1 wrist from 20 patients with early RA were assessed twice for JSN at 17 sites at baseline and after 36 or 60 months by 4 readers blinded to patient data but not time order. The joints were scored 0{\textendash}4 according to the OMERACT RAMRIS-JSN score. Intraclass correlation coefficients (ICC), smallest detectable change (SDC), percentage exact/close agreement (PEA/PCA), and standardized response mean (SRM) were calculated.Results. Median baseline and change score was 10.3 and 1.9, respectively. Intrareader ICC for baseline and change scores was good (>= 0.50) to very good (>= 0.80) for all and 3 of 4 readers, respectively. Interreader ICC was very good for change (0.93), while poor for baseline score if all 4 readers were included (0.36), but very good if 1 reader was excluded (0.87). Intrareader and interreader SDC was low (2.34{\textendash}3.18), except for the intrareader SDC for 1 reader (6.75). The mean PEA/PCA was high for baseline and change scores both within and between the readers (51.5{\textendash}99.2), except for interreader baseline PEA (14.4). SRM was moderate for all readers (0.55{\textendash}0.77).Conclusion. The OMERACT RAMRIS-JSN score showed high overall intrareader and interreader reliability, and moderate sensitivity to change, supporting inclusion of the measure as part of the OMERACT RAMRIS system.}, issn = {0315-162X}, URL = {https://www.jrheum.org/content/42/12/2480}, eprint = {https://www.jrheum.org/content/42/12/2480.full.pdf}, journal = {The Journal of Rheumatology} }