Table 5.

Comparative analysis of ROC curve for various cut-off levels of LDL-C,HDL-C, LDL/HDL

Variables	AUC/D-AUC (95%CI)	SE	Z	Sensitivity	Specificity	Cut-off value	P Value
LDL-C	0.574 (0.547–0.600)	0.016	4.714	75%	36%	2.32 mmol/L	0.000
HDL-C	0.625 (0.598–0.651)	0.015	8.233	61%	60%	1.06 mmol/L	0.000
LDL/HDL	0.668 (0.639–0.697)	0.015	11.327	65%	61%	2.517	0.000
LDL-C vs HDL-C	0.051 (0.003–0.099)	0.025	2.089	–	–	–	0.037
LDL-C vs LDL/HDL	0.095 (0.071–0.119)	0.012	7.723	–	–	–	0.000
HDL-C vs LDL/HDL	0.043 (0.012–0.074)	0.016	2.737	–	–	–	0.000

ROC receiver operating characteristic, AUC area under curve, D-AUC differential area under curve. Values are expressed as mean ± standard deviation or percentage. LDL-C low-density-lipoprotein cholesterol, HDL-C high-density-lipoprotein cholesterol, LDL/HDL the ratio of low-density-lipoprotein to high-density-lipoprotein