Fig. 3From: Identifying clinical subgroups in IgG4-related disease patients using cluster analysis and IgG4-RD composite scoreResults of cluster analysis and differences among clusters. a Three clusters of patients identified by cluster analysis. Hierarchical statistical clustering of IgG4-RD patients. b–j Comparisons of baseline characteristics among three clusters of IgG4-RD patients. Inter.ratio, proportion of internal organs to total organs involved. *P value < 0.05; **P value < 0.01; ***P value < 0.001Back to article page