Table 5.

Pain component of the WOMAC score as the demarcation criterion.

Outcome	AUC	Youden index	Threshold value	Sensitivity	Specificity	95% CI	P value
TPSTR	0.660	0.323	1.539	0.517	0.806	(0.555–0.766)	.005
FIASTR	0.643	0.280	1.657	0.391	0.889	(0.541–0.744)	.013
PASTR	0.589	–	–	–	–	(0.478–0.700)	.122
MTSTR	0.653	0.321	1.322	0.460	0.861	(0.553–0.753)	.008

AUC = area under the curve, CI = confidence interval, FIASTR = femoral intercondylar apex soft tissue ratio, MTSTR = medial tibial soft tissue ratio, PASTR = patella apical soft tissue ratio, TPSTR = tibial plateau soft tissue ratio, WOMAC = Western Ontario and McMaster University Osteoarthritis.