Table 4. Performance of ultrasonography in each Bethesda category.
Bethesda category | Sensitivity (%) | Specificity (%) | PPV (%) | NPV (%) | Accuracy (%) |
---|---|---|---|---|---|
Category I | 88.9 | 92.9 | 57.1 | 98.8 | 92.5 |
Category II | 62.5 | 96.5 | 31.3 | 99.0 | 95.6 |
Category III | 66.7 | 73.3 | 60 | 78.6 | 70.8 |
Category IV | 50 | 97.0 | 50 | 97.0 | 94.3 |
Category V | 95 | - | 100 | 0 | 95.0 |
Category VI | 92.4 | - | 100 | 0 | 92.4 |