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Table 4 MIDs for the FJS-12, WOMAC Pain and WOMAC Function scores

From: Minimal important differences for the WOMAC osteoarthritis index and the Forgotten Joint Score-12 in total knee arthroplasty patients

 MID derived from logistic regression analysisMID derived from ROC analysis
FJS-1210.8 points13.0 points (sensitivity 0.84, specificity 0.71)
WOMAC Pain7.5 points12.5 points (sensitivity 0.91, specificity 0.67)
WOMAC Function7.2 points14.7 points (sensitivity 0.85, specificity 0.76)