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Table 2 Disease characteristics of subjects with IP at baseline

From: Influence of Inflammatory Polyarthritis on Quantitative Heel Ultrasound Measurements

Variable Men N = 52 Women N = 87
  Mean (SD) Mean (SD)
Duration of arthritis* (years) 4.8 (2.9) 5.6 (2.8)
  Median (IQR) Median (IQR)
Number of swollen joints 2.0 (1.0, 8.0) 5.0 (2.0, 11.0)
Number of tender joints 5.0 (2.0, 8.5) 6.0 (2.0, 15.0)
Number of both swollen and tender joints 1.0 (0.0, 3.5) 2.0 (0.0, 5.0)
Larsen score1 27.5 (13.0,31.0) 11.0 (1.0, 21.0)
HAQ score (0–3) 0.5 (0.1, 1.1) 0.8 (0.4, 1.3)
  % %
Rheumatoid factor + ve 39.1 33.8
Erosions1 75.0 56.5
Satisfied ARA RA criteria (4/7 definition) 22.9 45.8
Satisfied ARA RA criteria (tree definition) 41.7 60.2
Steroid use for at least 3 months 5.8 17.2
  1. *Years between first symptom onset and ultrasound scan.
  2. 1Assessed in those with baseline radiographs (n = 27).