Table 1:

ROC curve analysis

Criterion (HU value)	Sensitivity	95% CI	Specificity	95% CI	+LR	−LR
≥0	100.00	89.6–100.0	0.00	0.0–14.4	1.00	NC
>0	88.24	72.5–96.6	50.00	29.1–70.9	1.76	0.24
>9	88.24	72.5–96.6	58.33	36.7–77.9	2.12	0.20
>10	85.29	68.9–95.0	62.50	40.6–81.2	2.27	0.24
>12	82.35	65.5–93.2	66.67	44.7–84.3	2.47	0.26
>13	76.47	58.8–89.2	75.00	53.3–90.2	3.06	0.31
>15^a	76.47^a	58.8–89.2^a	83.33^a	62.6–95.2^a	4.59^a	0.28^a
>16	70.59	52.5–84.9	87.50	67.6–97.2	5.65	0.34
>17	67.65	49.5–82.6	87.50	67.6–97.2	5.41	0.37
>19	64.71	46.5–80.2	91.67	73.0–98.7	7.76	0.39
>24	20.59	8.7–37.9	91.67	73.0–98.7	2.47	0.87
>27	20.59	8.7–37.9	95.83	78.8–99.3	4.94	0.83
>30	14.71	5.0–31.1	95.83	78.8–99.3	3.53	0.89
>31	5.88	0.9–19.7	100.00	85.6–100.0	NC	0.94
>43	0.00	0.0–10.4	100.00	85.6–100.0	NC	1.00

↵a CPE threshold value.