Fig. 2From: Serum lysophosphatidylcholines to phosphatidylcholines ratio is associated with symptomatic responders to symptomatic drugs in knee osteoarthritis patientsReceiver operating characteristic (ROC) curve for serum lysoPCs to PCs ratio for predicting responders to licofelone and naproxen in symptomatic knee OA patients. lysoPCs are the total serum concentration of all lysophosphatidylcholines; PCs are the total serum concentration of all phosphatidylcholinesBack to article page