Table 6.
Diagnostic performance between the proposed model and ACR TI-RADS.
| Model | Se | Sp | PPV | NPV | Ac | AUC | 95% CI |
|---|---|---|---|---|---|---|---|
| Training | |||||||
| model | 58.8% | 84.6% | 34.5% | 93.7% | 81.4% | 0.833 | 0.752-0.915 |
| ACR TI-RADS | 58.8% | 86.2% | 37.0% | 93.8% | 82.9% | 0.823 | 0.750-0.882 |
| P-value | 0.181 | 0.424 | 0.011 | ||||
| Validation | |||||||
| model | 61.9% | 91.5% | 56.5% | 93.1% | 87.1% | 0.897 | 0.835-0.959 |
| ACR-TI-RASA | 57.1% | 93.2% | 60.0% | 92.4% | 87.8% | 0.855 | 0.785-0.909 |
| P-value | 0.480 | 0.680 | 0.040 |
ACR, American College Radiology; AUC, area under the curve; CI, confidence interval; NPV, negative predictive value; PPV, positive predictive value; Se, sensitivity; Sp, specificity; TI-RADS, Thyroid Imaging Reporting and Data System.