Table 1.

Optimal percentage and diagnostic performance of each cut-off value for the ROC AUC more than 0.7

Cut-off (HU)	ROC AUC	Optimal percentage (%)	Specificity (%)	Sensitivity (%)	Accuracy (%)
350	0.748	1.2	75.8	66.1	69.7
400	0.778	8.5	81.8	66.1	71.9
450	0.779	4.4	81.8	66.1	71.9
500	0.754	20.3	78.8	66.1	70.8
550	0.781	23.9	81.8	62.5	69.7
600	0.786	68.8	57.6	85.7	75.3
650	0.774	53.7	72.7	69.6	70.8
700	0.780	68.1	75.8	71.4	73.0
750	0.771	93.1	57.6	83.9	74.2
800	0.791	93.8	66.7	80.4	75.3
850	0.781	95.1	72.7	76.8	75.3
900	0.777	99.2	72.7	75.0	74.2
950	0.729	90.3	81.8	60.7	68.5
1000	0.728	82.2	90.9	53.6	67.4
1050	0.738	93.6	90.9	60.7	71.9
1100	0.759	96.8	90.9	58.9	70.8
1150	0.758	98.4	93.9	57.1	70.8
1200	0.750	99.0	93.9	55.4	69.7
1250	0.717	98.2	93.9	48.2	65.2

ROC: operating characteristic; AUC: area under curve