Table 3.

Specificity, positive predictive value (PPV), negative predictive value (NPV), and diagnostic accuracy for individual parameters or at different parameter sum scores (%). Sensitivity for every parameter and sum score was 100%; 95% confidence intervals (%) for those tests are in square brackets.

Variable	Specificity (%)	PPV (%)	NPV (%)	Diagnostic Accuracy
Individual parameters
Volume	75 [19–99]	80 [28–99]	100 [29–100]	88 [47–100]
Shape	50 [7–93]	67 [22–96]	100 [16–100]	75 [35–97]
Hilum	75 [19–99]	80 [28–99]	100 [29–100]	88 [47–100]
TTP	75 [19–99]	75 [19–100]	100 [29–100]	86 [42–100]
WiR	100 [40–100]	100 [29–100]	100 [40–100]	100 [59–100]
Sum score
0	50 [7–93]	67 [22–96]	100 [16–100]	75 [35–97]
20	50 [7–93]	67 [22–96]	100 [16–100]	75 [35–97]
40	75 [19–99]	80 [28–99]	100 [29–100]	88 [47–100]
60	75 [19–99]	80 [28–99]	100 [29–100]	88 [47–100]
80	75 [19–99]	80 [28–99]	100 [29–100]	88 [47–100]
100	100 [40–100]	100 [40–100]	100 [40–100]	100 [63–100]