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Validation of derived R/G ratios with visual score and pathology
| R/G ratio |
κ(P) | ||
|---|---|---|---|
| ≥0.54 | <0.54 | ||
| Visual score by expert (n = 70 sites) | |||
| Positive (score 1; class 3/suspicious) | 29 | 1 | 0.66 (P < 0.0001) |
| Negative (score 2; class 1/normal and 2/abnormal) | 11 | 29 | |
| Pathology (n = 70 specimens) | |||
| Positive (HGD and moderate dysplasia) | 28 | 2 (moderate dysplasia) | 0.61 (P < 0.0001*) |
| Negative (LGD) | 12 (1 normal, 2 inflammation, 5 squamous metaplasia, and 4 mild dysplasia) | 28 | |
P < 0.05.
