Fig. 1

Boxplots for serum lysoPC to PC ratio in symptomatic responders and non-responders to licofelone and naproxen in symptomatic knee OA patients. Note: one outlier was excluded in the analysis, and the total number of patients included was 157. lysoPCs are the total serum concentration of all lysophosphatidylcholines; PCs are the total serum concentration of all phosphatidylcholines