Comparison of diagnostic performances of FNA-C and FNA-C with FNA-Tg according to US features using washout Tg ≥ 1.8a
| US Feature | Sensitivity | Specificity | PPV | NPV | Accuracy |
|---|---|---|---|---|---|
| Overall | |||||
| FNA-C | 84.4 | 99.0 | 98.5 | 89.2 | 92.1 |
| FNA-C+FNA-Tg | 100 | 93.0 | 91.7 | 100 | 96.1 |
| P value | .0015b | .04123b | .0235b | .0011b | .2386 |
| Positive | |||||
| FNA-C | 85.1 | 97.1 | 98.4 | 75.6 | 88.9 |
| FNA-C+FNA-Tg | 100 | 91.4 | 96.1 | 100 | 97.3 |
| P value | .0051b | .9590 | .4149 | .0088b | .0530 |
| Negative | |||||
| FNA-C | 66.7 | 100 | 100 | 98.5 | 98.5 |
| FNA-C+FNA-Tg | 100 | 93.9 | 42.9 | 100 | 61.7 |
| P value | 1.0000 | .1336 | 02482 | .3212 | .3711 |