Prevalence of puffy fingers, arthritis, and nailfold videocapillaroscopy scleroderma pattern in early systemic sclerosis patients. Prevalence of (A) puffy fingers and (B) arthritis in the 71 early systemic sclerosis (SSc) patients from both centers, divided into three subsets according to the SSc marker autoantibody status and the nailfold videocapillaroscopy (NVC) pattern: presence of both SSc marker autoantibodies and NVC scleroderma pattern (subset 1), presence of SSc marker autoantibodies only (subset 2), and presence of NVC scleroderma pattern only (subset 3). (C) Prevalence of NVC scleroderma pattern in all patients from both centers divided according to the presence/absence of puffy fingers. Chi-square test was applied for statistical analysis of data reported in (A) and (B); Fisher's exact test was applied for statistical analysis of data reported in (C).
Valentini et al. Arthritis Research & Therapy 2013 15:R63 doi:10.1186/ar4236