Table 4 Diagnostic performance values of the three ultrasound classification systems for malignant thyroid nodules ≤ 10 mm
Risk category | Sensitivity (%) | Specificity (%) | Positive predictive value (%) | Negative predictive value (%) | Accuracy (%) |
|---|---|---|---|---|---|
ACR-TIRADS* | |||||
TR5 | 46.0 | 95.2 | 58.6 | 92.3 | 88.9 |
TR4 or TR5 | 81.1 | 70.8 | 29.1 | 96.2 | 72.1 |
ATA-2015** | |||||
High suspicion | 40.5 | 96.0 | 60.0 | 91.6 | 88.9 |
Intermediate suspicion or High suspicion | 59.5 | 86.0 | 38.6 | 93.5 | 82.6 |
K-TIRADS*** | |||||
5 | 40.5 | 96.8 | 65.2 | 91.7 | 89.6 |
4 or 5 | 59.5 | 86.0 | 38.6 | 93.5 | 82.6 |