Fig. 2

Change in symptoms and function from baseline based on available data. WOMAC (a) total, (b) pain, (c) stiffness, and (d) function subscales, and (e) VAS, by visit. Data are mean of the relative change (%) from baseline. Statistical analyses comparing chondroitin sulfate and celecoxib were performed using Student’s t test or the Kruskal–Wallis test. CS chondroitin sulfate, CX celecoxib, WOMAC, Western Ontario and McMaster Universities Osteoarthritis Index, VAS visual analogue scale