Table 3.

Diagnostic value of IGFBP-3 and IL-6 for osteoporosis (n = 85).

Variables	AUC (95% CI)	Cut-off values	Sensitivity	Specificity	Youden index
IGFBP-3	0.706 (0.594-0.818)	3.65	89.12	57.25	46.37
IL-6	0.685 (0.571-0.798)	0.205	80.25	54.53	34.78

AUC (95%): area under the receiver operating characteristic curve (95% confidence interval).