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Assessment of performance measurement criteria according to nodule size.
| Nodule size (mm) | The number of nodule | Confusion matrix | Performance criteria | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|
| TP | FP | FN | TN | Acc | Sen | Spc | PDV | NDV | F1 | ||
| <10 | 75 | 3 | 4 | 0 | 68 | 94.67 | 100 | 94.45 | 42.86 | 100 | 0.60 |
| 10–20 | 65 | 43 | 1 | 1 | 20 | 96.92 | 97.73 | 95.24 | 97.73 | 95.24 | 0.98 |
| >20 | 80 | 67 | 1 | 2 | 10 | 96.25 | 97.10 | 90.91 | 98.53 | 83.34 | 0.98 |
| Overall | 220 | 113 | 6 | 3 | 98 | 95.91 | 97.42 | 94.24 | 94.96 | 97.03 | 0.96 |
