Table 4 Comparison of autoantibodies and radiographic erosions
RF (+) n = 161RF (−) n = 32
Erosion +76 (47%)Erosion (+)9 (28%)
Erosion −85 (53%)Erosion (−)23 (72%)
  • A total of 16 RF (+) had no corresponding erosion data; 5 RF (−) had no corresponding erosion data; κ = 0.094, p<0.001.

  • RF, rheumatoid factor.