Fig. 3.

Improvement in knee osteoarthritis symptoms from baseline following genicular artery embolization reported in standardized minimal clinically important difference (MCID) units with 95% confidence interval. The MCID was set at 20 points for knee pain (0–100 scale) and 16.8 points for WOMAC Total score (0–100 scale). Treatment effects below 0.5 MCID units indicate that it is unlikely that an appreciable number of patients will show a clinically important benefit, treatment effects between 0.5 and 1 MCID units indicate that a treatment may be beneficial to an appreciable number of patients, and treatment effects above 1 MCID unit indicate that many patients may gain important benefits from treatment [28,29].