Fig. 1

Differences in nailfold videocapillaroscopy score for different connective tissue diseases. Differences of nailfold videocapillaroscopy in different connective tissue diseases and non-CTD healthy people obtained by one-way ANOVA, * P < 0.05, ** P < 0.01, *** P < 0.001, **** P < 0.0001, RA rheumatoid arthritis, SLE systemic lupus erythematosus, DM dermatomyositis, SS Sjögren’s syndrome, SSc systemic sclerosis.