Fig. 4

Comparison between SLEDAI-2K and IFN score values of the hypocomplementemic (Hypo-C group, n = 12) and normocomplementemic (Normo-C group, n = 19) subset. Values distribution is shown by boxplot (Whiskers 5–95 percentile). Data were analyzed with Mann-Whitney non-parametric test (*p < 0.05, **p < 0.01)