Table 4. ROC analysis on the pixel brightness of LCI images for differentiating lesions from normal mucosa.
| Pixel brightness | Area under curve | Cutoff | Sensitivity | Specificity |
|---|---|---|---|---|
| R | 0.478 | — | — | — |
| G | 0.384 | — | — | — |
| B | 0.446 | — | — | — |
| R/(G+B) | 0.646 | 0.8020 | 0.514 | 0.773 |
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