Table 4.

AUC values and sensitivity and specificity for suggested cutoff score

Dependent variable		AUC	95% CI	Cutoff score (Sn, SP)
CS+ or CS−	CLBP	0.512	0.380–0.646	20 (73.7%, 37.7%)
	KOA	0.620	0.409–0.793	11 (50.0%, 79.0%)
CSS+ or CSS−	CLBP	0.698	0.571–0.800	28 (69.2%, 69.2%)
	KOA	0.764	0.540–0.900	17 (100%, 51.0%)
Pain intensity “higher” vs “lower” (median split value =2.72)	CLBP	0.657	0.545–0.754	34 (45.1%, 84.9%)
KOA	0.714	0.553–0.835	19 (64.0%, 76.0%)
Pain interference “higher” or “lower” (median split value =1.71)	CLBP	0.734	0.629–0.818	34 (47.1%, 86.9%)
KOA	0.759	0.601–0.868	18 (68.0%, 76.0%)

Abbreviations: CLBP, chronic low back pain; KOA, knee osteoarthritis; AUC, area under the curve; Sn, sensitivity; Sp, specificity; CS, central sensitization; CSS, central sensitivity syndrome.