Figure 2: Higher SLE Disease Activity Index (SLEDAI) scores and serum anti-C1q antibody concentrations in SLE patients with lupus nephritis (LN) relative to non-LN SLE patients. (a) SLEDAI scores between LN SLE patients () and non-LN SLE patients (). (b) Concentrations of anti-C1q antibody were measured by an ELISA in serum samples from SLE 58 patients with LN (LN-SLE) (), 76 SLE patients without LN (non-LN SLE), and 84 healthy individuals. value by Student’s -test. Data presents as the mean ± SEM in each group.