Table 4.

Coordinates of the receiver operating characteristic (ROC) curves for each cut-off of DAST-SL

First cut-off				Second cut-off				Third cut-off
Cut off	Sensitivity	1-specificity	Youden index	Cut off	Sensitivity	1-specificity	Youden index	Cut off	Sensitivity	1-specificity	Youden index
≥ 0.5	1.000	0.375	0.625	≥ 0.5	1.000	0.750	0.250	≥ 0.5	1.000	0.889	0.111
≥ 1.5*	0.987	0.083	0.904	≥ 1.5	1.000	0.600	0.400	≥ 1.5	1.000	0.822	0.178
≥ 2.5	0.897	0.042	0.855	≥ 2.5	0.992	0.367	0.625	≥ 2.5	1.000	0.711	0.289
≥ 3.5	0.776	0.042	0.734	≥ 3.5*	0.967	0.100	0.867	≥ 3.5	1.000	0.570	0.430
≥ 4.5	0.667	0.000	0.667	≥ 4.5	0.842	0.050	0.792	≥ 4.5	1.000	0.437	0.563
≥ 5.5	0.551	0.000	0.551	≥ 5.5	0.700	0.033	0.700	≥ 5.5	0.978	0.312	0.666
≥ 6.5	0.308	0.000	0.308	≥ 6.5	0.400	0.000	0.400	≥ 6.5*	0.978	0.036	0.942
≥ 7.5	0.173	0.000	0.173	≥ 7.5	0.225	0.000	0.225	≥ 7.5	0.556	0.015	0.541
≥ 8.5	0.026	0.000	0.026	≥ 8.5	0.033	0.000	0.033	≥ 8.5	0.089	0.000	0.089

* Optimal cut-off value

Youden Index(J) = Sensitivity+ Specificity -1