Fig. 4

Significant correlations for both pCRP and the mCRP/pCRP ratio based on 160 patients with systemic lupus erythematosus (SLE; A) and 30 patients with ANCA-associated vasculitis (AAV; B). Black bars represent correlations with pCRP and white bars represent correlations with the mCRP/pCRP ratio. Left of midline represents inverse correlations whereas right of midline represents direct correlations. SDI, SLICC/ACR damage index; U-Ery, Urinary erythrocytes (SLE: n = 155); C3d, complement component 3d (n = 45); C4, complement protein 4 (n = 158); C3, complement protein 3 (n = 158); ESR, erythrocyte sedimentation rate (SLE: n = 155; AAV: n = 19); ns, not significant (* = p ≤ 0.05, ** = p < 0.01, *** = p < 0.001)