Fig. 1

Scatterplots showing significant associations between adipokines and knee osteoarthritis severity: effect of leptin on Lequesne index score in the univariate setting (adjusted by round of measurement only (a), association for resistin (b), and visfatin (c) independently of clinical, anthropometric, metabolic, and inflammatory factors as well as the rest of the adipokines; association between Lequesne index and osteopontin after adjustment by clinical, anthropometric, metabolic, and inflammatory factors, but not the rest of the adipokines (d)). In all cases, values were corrected for confounders using the corresponding linear model. Adipokine values were drawn in the scale of the corresponding Taylor transformation. Labels along x-axes are shown in the original scale of the adipokines. PCC Partial correlation coefficient, pv Association p value according to F-test derived from the linear model