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Table 1 Plasma adiponectin levels and clinical characteristics of patients in radiographic subgroups

From: Adiponectin associates with markers of cartilage degradation in osteoarthritis and induces production of proinflammatory and catabolic factors through mitogen-activated protein kinase pathways

  Radiographic severity of osteoarthritis by Ahlbäck classification   
Patient characteristics Grades 1 and 2
(n= 11)
Grade 3
(n= 16)
Grades 4 and 5
(n= 8)
Total (N= 35) P-values
Adiponectin (μg/ml) 2.4 (0.4) 2.1 (0.2) 3.5 (0.5) 2.5 (0.2) 0.03
Age (years) 68.7 (3.0) 67.3 (2.6) 75.0 (2.0) 69.5 (1.6) 0.17
BMI (kg/m2) 28.7 (1.1) 29.8 (1.4) 29.0 (1.6) 29.3 (0.8) 0.84
COMP (U/L) 10.6 (1.1) 11.7 (1.0) 17.0 (2.4) 12.6 (0.9) 0.01
MMP-3 (ng/ml) 9.6 (1.1) 9.2 (0.6) 10.9 (1.5) 9.7 (0.6) 0.52
  1. BMI = body mass index; COMP = cartilage oligomeric matrix protein; MMP-3 = matrix metalloproteinase 3. Values are means (SEM). P-values refer to the significance of the comparison of the three groups calculated by analysis of variance.