Table 2.
Causes of discrepancies in classifications by the experts and by the CNN.
| n (%) | |
|---|---|
| False-negative lesions (n = 56) | |
| Poorly demarcated | (53.6) |
| Debris | 12 (21.4) |
| Darkness∗ | 17 (30.4) |
| Poor focus | 1 (1.8) |
| Similarity to the edge of the bubble | 7 (12.5) |
| Similarity to the submucosal vascular shadow | 17 (30.4) |
| Smallness | 2 (3.6) |
| False-positive lesions (n = 895) | |
| Darkness | 32 (3.6) |
| Bubble | 179 (20) |
| Debris | 516 (57.7) |
| Vascular shadow | 73 (8.2) |
| Smallness | 3 (0.2) |
| Fold | 92 (10.3) |
| Hookworms overlooked by experts (n = 2) | |
| True hookworms | 2 (100) |
∗Caused by dark view or coffee-like bloody fluid.