Table 2.
Confusion matrix of 259 testing slides for diagnosing frozen sections of thyroid nodules. The overall accuracy of all testing slides is 83.4%. Both benign and malignant categories have high precision, which is 95.3% and 96.7%, respectively, while the sensitivity of uncertain category is 100%.
| Ground truth | Prediction | ||||
|---|---|---|---|---|---|
| Benign | Uncertain | Malignant | Overall | Sensitivity | |
| Benign | 61 | 19 | 5 | 85 | 71.8% |
| Uncertain | 0 | 7 | 0 | 7 | 100% |
| Malignant | 3 | 16 | 148 | 167 | 88.6% |
| Overall | 64 | 42 | 153 | 259 | – |
| Precision | 95.3% | 16.7% | 96.7% | – | – |