Figure 3.

Anti-C-reactive protein antibody levels in patients with proliferative versus membranous lupus nephritis. The levels of anti-C-reactive protein (anti-CRP) antibodies in the 26 patients with proliferative lupus nephritis (World Health Organisation (WHO) class III/IV) were reduced to a greater extent than the eight patients with membranous lupus nephritis (WHO class V), although not statistically significant by the Mann-Whitney U test (mean difference -8.3 vs. -1.1 units; P = 0.08). The vertical bars denote 95% confidence intervals. The outlier as well as the three patients with class III to IV/V nephritis were not included in this analysis.