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Comparisons of D-dimer between axial spondyloarthritis (axSpA) and pSpA patients (A), and between SpA patients with and without PJI (B), AU (C) and HLA-B27 positivity (D). PJI peripheral joint involvement; AU anterior uveitis; HLA-B27 human leukocyte antigen B27. Data are expressed as median and interquartile range (IQR).
