Journal of Rheumatic Diseases

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Fig. 1. Optimal CH50 cut-off and relative risk. When the optimal CH50 cut-off at diagnosis for the high baseline activity of AAV based on the BVAS (BVAS ≥13) was set below 62.1 U/m, AAV patients with CH50 <62.1 U/mL had a significantly higher risk for a high baseline activity of AAV based on the BVAS than those with CH50 ≥62.1 U/mL. CH50: total haemolytic complement activity, BVAS: Birmingham Vasculitis Activity Score, AAV: antineutrophil cytoplasmic antibody-associated vasculitis, CI: confidence interval, RR: relative risk.
J Rheum Dis 2021;28:85~93 https://doi.org/10.4078/jrd.2021.28.2.85
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