Fig. 5
From: Profiling of inflammatory mediators in the synovial fluid related to pain in knee osteoarthritis
Correlations between pain and patient characteristics. a. Correlation between age and different pain scoring systems. b. Correlation between K-L grade and different pain scoring systems. c. Correlation between the WOMAC and different pain scoring systems. d. Correlation between ROM and different pain scoring systems. Correlation coefficients were calculated by the Spearman rank correlation test using two-tailed p values. Fitting curves with correlation coefficients are shown in the plots