Table 3.
The ROC of conventional ultrasonography combined with contrast-enhanced ultrasonography to diagnose axillary lymph nodes
| ROC | AUC | NPV | PPV | Sensitivity | Specificity | Accuracy | Sig. |
|---|---|---|---|---|---|---|---|
| Before NAC | 0.895 (0.808–0.982） |
85.7% | 77.8% | 63.6% | 92.3% | 83.8% | p < 0.0001 |
| After NAC | 0.882 (0.802–0.962) |
62.5% | 83.3% | 87.0% | 55.6% | 78.1% | p < 0.0001 |
| Positive lymph node |
0.861 (0.751–0.971) |
77.8% | 83.3% | 83.3% | 77.8% | 81.0% | p < 0.0001 |
ROC,Receiver operating characteristic curve;AUC,Area under ROC;PPV,Positive predictive value; NPV, Negative predictive value; Sig., Significance value.