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

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

	MID derived from logistic regression analysis	MID derived from ROC analysis
FJS-12	10.8 points	13.0 points (sensitivity 0.84, specificity 0.71)
WOMAC Pain	7.5 points	12.5 points (sensitivity 0.91, specificity 0.67)
WOMAC Function	7.2 points	14.7 points (sensitivity 0.85, specificity 0.76)

ISSN: 1471-2474