Erratum to: What is the Minimum Clinically Important Difference for the WOMAC Index After TKA?

In the study “What is the Minimum Clinically Important Difference for the WOMAC Index After TKA?” Table 4 was omitted from the published paper. Table 4 is below.Table 4.: ROC curve analysis identifying the MIC (threshold), reliability, standard error of the measure (SEM), and distributional analysis defining the MDC95 for the components and the total WOMAC scores.Additionally, the title for Table 3 is incorrect. The title should be: “Table 3. The MCID for the components and total WOMAC scores when adjusting for preoperative confounding variables.” In the Results section, specifically the MCID subhead, Table 3 should be referenced in the second sentence: “After adjusting for confounding variables (age, gender, BMI, WOMAC and SF-12 scores) between the groups (little and no improvement) the MCID ranged from 8 for stiffness to 11 for pain (Table 3).” Finally, in the Results section, specifically the MIC and MDC95 subheads, Table 3 was incorrectly referenced. Table 4 (above) should have been referenced instead. We apologize for these errors.