Kappa values for the 13 parameters evaluated in 64 malignant melanomas, comparing the performance of each pathologist for each parameter with each of the other members of the panel
| Feature | Mean | SD | Min | 25th | Median | 75th | Max |
|---|---|---|---|---|---|---|---|
| Min, minimum value; 25th/75th, 25th/75th centile; Max, maximum value. | |||||||
| *Calculated in 55 invasive lesions. | |||||||
| Dimension >6 mm | 1.00 | – | – | – | – | – | – |
| Asymmetry | 0.74 | 0.30 | −0.05 | 0.64 | 0.78 | 1.00 | 1.00 |
| Poor circumscription | 0.84 | 0.15 | 0.49 | 0.80 | 0.91 | 0.93 | 1.00 |
| Irregular and confluent nests | 0.91 | 0.17 | 0.60 | 1.00 | 1.00 | 1.00 | 1.00 |
| Single melanocytes predominating | 0.83 | 0.15 | 0.50 | 0.79 | 0.89 | 0.90 | 1.00 |
| Absence of maturation* | 0.87 | 0.11 | 0.63 | 0.78 | 0.92 | 0.93 | 1.00 |
| Suprabasal melanocytes | 0.76 | 0.32 | 0.20 | 0.65 | 1.00 | 1.00 | 1.00 |
| Asymmetrical melanin | 0.76 | 0.18 | 0.32 | 0.69 | 0.81 | 0.88 | 1.00 |
| Melanin in deep cells* | 0.86 | 0.09 | 0.65 | 0.83 | 0.83 | 0.92 | 1.00 |
| Cytological atypia | 0.65 | 0.48 | −0.15 | 0.05 | 1.00 | 1.00 | 1.00 |
| Mitoses* | 0.90 | 0.08 | 0.69 | 0.83 | 0.91 | 1.00 | 1.00 |
| Necrosis* | 1.00 | – | – | – | – | – | – |
| Dermal lymphocytic infiltrate | 0.47 | 0.37 | −0.06 | 0.06 | 0.47 | 0.65 | 1.00 |