Table 3. Diagnostic Performance of Combined Use of Quantitative Parameters of SWE and SMI with B-Mode US in Differentiating Malignant from Benign Masses.

Variables	AUC	95% CI	P§
B-mode US alone	0.719	0.649–0.789	NA
Set 1* (selective downgrade of category 4a)
B-mode + Emax	0.829	0.769–0.890	< 0.001
B-mode + Eratio	0.772	0.705–0.838	0.092
B-mode + SMIVI	0.778	0.713–0.843	0.047
Set 2† (reassessment of both category 3 & 4a)
B-mode + Emax	0.742	0.671–0.813	0.894
B-mode + Eratio	0.685	0.611–0.760	0.167
B-mode + SMIVI	0.687	0.613–0.761	0.424
Set 1 and Set 2‡
B-mode + Emax + Eratio + SMIVI	0.849	0.792–0.905	< 0.001

^*Selective downgrade for only BI-RADS category 4a lesion when each value was lower than respective cutoff value, ^†Reassessment of BI-RADS category for both category 3 and 4a. Selective downgrade for category 4a when each value was lower than respective cutoff values and selective upgrade for category 3 when quantitative values higher than respective values, ^‡Selective downgrade if one or no parameter for exceeding cutoff values, selective upgrade if all three parameters for exceeding cutoff values, ^§p values indicate comparison of diagnostic performance of between BI-RADS alone and addition of quantitative parameters. US = ultrasound