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Table 1 Main epidemiologic data for 118 patients with RA who underwent ultrasonographya

From: Correlation between endothelial function and carotid atherosclerosis in rheumatoid arthritis patients with long-standing disease

Variable Mean ± SD or number of patients (%) Median (IQR)
Age at the time of the study, years 58.4 ± 12.9 59.5 (49 to 68.5)
Disease duration from RA diagnosis, years 13.8 ± 7.7 14 (7 to 19.7)
Women 89 (75.4%)  
Rheumatoid factor-positive 96 (81.4%)  
  1. aRA: rheumatoid arthritis, SD: standard deviation, IQR: interquartile range.