Fig. 4From: One-year Oxford knee scores should be used in preference to 6-month scores when assessing the outcome of total knee arthroplastyReceiver operating characteristic (ROC) curve for predicting a 5-point or greater (minimal clinically important difference (MCID)) improvement in the Oxford knee score (OKS) from 6 to 12 months according to body mass index (BMI) (black line) and preoperative OKS (grey line). Dashed line is a reference line for no predictive abilityBack to article page