Fig. 1From: A cluster analysis of patients with axial spondyloarthritis using tumour necrosis factor alpha inhibitors based on clinical characteristicsMultiple correspondence analysis (MCA) performed in all 1042 patients who met the inclusion criteria. First factorial plane with the x-axis and y-axis representing the first and the second most important dimensions, respectively. A Visualization of the correlation between variables and MCA principal dimensions. B Visualization of the distribution of individuals in the plane of the two major dimensions according to the divided clusters. HLA, human leucocyte antigen; IBD, inflammatory bowel disease; NSAIDs, non-steroidal anti-inflammatory drugsBack to article page