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Table 1 Correlations between biochemical markers

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

Marker Pyridinoline YKL-40 MMP-3 MMP-9 TIMP-1
CRP 0.027 (0.2184) 0.103 (0.0009) 0.050 (0.4047) -0.007 (0.8462) 0.300 (0.0528)
Pyridinoline   0.090 (0.0198) 0.490 (0.0272) 0.186 (0.0554) 0.206 (0.0973)
YKL-40    0.382 (0.0046) 0.154 (0.1027) 0.083 (0.0682)
MMP-3     0.081 (0.0938) -0.001 (0.6267)
MMP-9      -0.282 (0.1033)
  1. Correlation coefficients and P values (in parenthesis) were determined with the Spearman rank test. CRP, C-reactive protein; MMP, matrix metalloproteinase; TIMP, tissue inhibitor of metalloproteinases.