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Table 2 Numbers of patients and joints with recent onset> a joint erosion (JE)/joint space narrowing (JSN) at 52 weeks exhibiting JSN/JE at week 26 b

From: Existing joint erosions increase the risk of joint space narrowing independently of clinical synovitis in patients with early rheumatoid arthritis

Variable Patients Joints
n (%) (n = 631 c ) (n = 17,644)
Recent onset JE with existing JSN 46 (7.3) 59 (0.3)
Recent onset JE without existing JSN 143 (22.7) 216 (1.2)
Recent onset JSN with existing JE 88 (13.9) 133 (0.8)
Recent onset JSN without existing JE 65 (10.3) 93 (0.5)
  1. aNo JE/JSN at week 26 but JE/JSN present at week 52. bExisting JE/JSN is defined as the presence of JE/JSN at week 26. cPatients could have different JE/JSN patterns for the joints that were evaluated.