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Table 2 Correlations between joint space width and biochemical markers

From: Relationship between radiographic grading of osteoarthritis and the biochemical markers for arthritis in knee osteoarthritis

Biochemical marker r P
CRP -0.212 0.751
Pyridinoline -0.282 0.039
YKL-40 -0.146 0.725
MMP-3 -0.241 0.466
MMP-9 -0.088 0.971
TIMP-1 -0.189 0.368
  1. CRP, C-reactive protein; MMP, matrix metalloproteinase; TIMP, tissue inhibitor of metalloproteinases.