Table 2.

Sensitivity, specificity, distance from curve and Youden index for different cut-off values of the EX, CY and rPE subscales

Subscale	Cut-off Value *	Sensitivity	Specificity	(1 – Specificity)	Distance from Curve	Youden Index
EX	8.50	0.919	0.568	0.432	0.439	0.487
	9.50	0.919	0.712	0.288	0.299	0.631
	10.50	0.919	0.795	0.205	0.220	0.714
	11.50	0.919	0.841	0.159	0.178	0.760
	12.50	0.919	0.886	0.114	0.139	0.805
	13.50	0.806	0.924	0.076	0.208	0.730
	14.50	0.790	0.932	0.068	0.221	0.722
	15.50	0.774	0.932	0.068	0.236	0.706
	16.50	0.726	0.939	0.061	0.281	0.665
CY	3.50	1.000	0.553	0.447	1.000	0.553
	4.50	0.984	0.712	0.288	1.000	0.696
	5.50	0.952	0.826	0.174	1.000	0.778
	6.50	0.903	0.917	0.083	0.128	0.820
	7.50	0.903	0.924	0.076	0.123	0.827
	8.50	0.871	0.932	0.068	0.146	0.803
	9.50	0.855	0.932	0.068	0.160	0.787
	10.50	0.839	0.932	0.068	0.175	0.771
	11.50	0.790	0.932	0.068	0.221	0.722
rPE	6.50	0.935	0.636	0.364	0.369	0.571
	7.50	0.919	0.765	0.235	0.248	0.684
	8.50	0.919	0.848	0.152	0.172	0.767
	9.50	0.887	0.879	0.121	0.166	0.766
	10.50	0.887	0.894	0.106	0.155	0.781
	11.50	0.855	0.932	0.068	0.160	0.779
	12.50	0.839	0.932	0.068	0.175	0.771
	13.50	0.790	0.932	0.068	0.221	0.722
	14.50	0.710	0.932	0.068	0.298	0.642

*The cut-off values for EX range from 0 to 26, CY range from 0 to 22 and rPE range from 0 to 30 and only a selection of scores are reported without the extreme values