Table 1

Biological and radiographic characteristics of patients and controls. (Statistics: Mann-Whitney U test)

SubjectsOsteoarthritis (n=45)Controls (n=33)p Value1-150
MeanMedianRangeMeanMedianRange
YKL-40 (ng/ml)90.367.533–34366.9359.020–2620.035
C reactive protein (mg/l)2.932.030.17–9.31.400.930.17–7.840.006
Age (years)656830–84424632–500.001
Mean joint space width (mm)1.71.63.8–0NDNDND
Minimum joint space width (mm)1.31.13.6–0NDNDND
  • 1-150 p Value—osteoarthritis vcontrols.

  • ND = not done.