Table 4. Concordance of Classified Categories of Thyroid Nodules between KTA/KSThR, ATA, and ACR Guidelines (Dataset 1).
| Guideline and Category | ATA | ACR | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| Benign | Very Low Suspicion | Low Suspicion | Intermediate Suspicion | High Suspicion | Benign | Not Suspicious | Mildly Suspicious | Moderately Suspicious | Highly Suspicious | |
| KTA/KSThR | ||||||||||
| Benign | 0 | 42 (79.2) | 11 (20.8) | 0 | 0 | 36 (67.9) | 13 (24.5) | 3 (5.7) | 1 (1.9) | 0 |
| Low suspicion | 0 | 222 (19.8) | 898 (80.2) | 0 | 0 | 0 | 260 (23.2) | 765 (68.3) | 95 (8.5) | 0 |
| Intermediate suspicion | 0 | 0 | 0 | 506 (94.9) | 27 (5.1) | 2 (0.4) | 0 | 0 | 503 (94.4) | 28 (5.3) |
| High suspicion | 0 | 0 | 0 | 0 | 294 (100) | 0 | 0 | 0 | 15 (5.1) | 279 (94.9) |
| ATA | ||||||||||
| Benign | 0 | 0 | 0 | 0 | 0 | |||||
| Very low suspicion | 36 (13.6) | 179 (67.8) | 45 (17.0) | 4 (1.5) | 0 | |||||
| Low suspicion | 0 | 723 (79.5) | 92 (10.1) | 0 | ||||||
| Intermediate suspicion | 2 | 0 | 0 | 487 (96.2) | 17 (3.4) | |||||
| High suspicion | 0 | 0 | 0 | 31 (9.7) | 290 (90.3) | |||||
Data are number of nodules (% of nodules in each category of KTA/KSThR, ATA, or ACR guidelines) in dataset 1 (n = 2000).