Skip to main content

Table 1 Baseline characteristics of the patients in the study

From: Influence of HLA DRB1 alleles in the susceptibility of rheumatoid arthritis and the regulation of antibodies against citrullinated proteins and rheumatoid factor

 

RA (n = 253)

Non-RA (n = 173)

Age in years, mean ± standard deviation

62 ± 12

50 ± 14

Percentage of patients who are women

64

55

ACPA-positive, number (percentage)

143 (61.9%)

9 (5.6%)

RF-positive, number (percentage)

169 (72.5%)

27 (15.9%)

Duration of symptoms in weeks, median (range)

20 (3-52)

15 (2-52)

  1. Percentages exclude missing data.
  2. ACPA, anti-citrullinated protein antibody; Non-RA, other arthropathies; RA, rheumatoid arthritis; RF, IgM rheumatoid factor.