Figure 6.

Secondary analysis: Scatter plots. On each graph dedicated to a specific Kellgren-Lawrence (KL) radiologic osteoarthritis scale grade (I–IV), each patient was represented by 1 mark, as a function of age (x-axis) and body mass index (BMI) (y-axis), with a color differentiation between responders and nonresponders. The center of gravity of each subpopulation, was represented by + for the responders and by × for the non responders. The distance between these 2 symbols was always very small, illustrating that both age and BMI had no significant influence on the response. The linear curves and the associated R² supported the absence of correlation between BMI and age. OMERACT-OARSI = Outcome Measures in Rheumatoid Arthritis Clinical Trials-Osteoarthritis Research Society International.