Table 5.

Details of ROC curve analysis for AST and GGT in distinguishing between Cases with reported abstinence for 60 days and Cases reported as non-abstinent.

	AST			GGT
	Combined	Female	Male	Combined	Female	Male
AUC (95% CI)	0.737 (0.705–0.770)	0.774 (0.713–0.835)	0.726 (0.688–0.764)	0.771 (0.739–0.802)	0.851 (0.798–0.904)	0.744 (0.706–0.781)
Standard error	0.017	0.031	0.020	0.016	0.027	0.019
p value	8.85 × 10−35	2.30 × 10−12	2.31 × 10−24	2.03 × 10−43	2.28 × 10−18	1.92 × 10−27
70% Specificity: Sensitivity	0.67	0.70	0.66	0.69	0.82	0.66
Cut-off (units/L)	53	53	53	122	85	133
80% Specificity: Sensitivity	0.54	0.59	0.53	0.60	0.74	0.54
Cut-off (units/L)	63	64	63	168	108	200
85% Specificity: Sensitivity	0.46	0.50	0.45	0.51	0.68	0.49
Cut-off (units/L)	72	73	72	215	126	232
90% Specificity: Sensitivity	0.37	0.34	0.36	0.46	0.63	0.40
Cut-off (units/L)	85	87	84	265	138	288
95% Specificity: Sensitivity	0.23	0.22	0.24	0.35	0.54	0.28
Cut-off (units/L)	105	108	103	363	220	422