Table 1 Distribution of the study population on the basis of nodal positivity and tumor stage.
Tumor Stage | Training Set | Â | Â | Validation Set | Â | Â |
|---|---|---|---|---|---|---|
| Â | Node positive | Node negative | Total | Node positive | Node negative | Total |
Normal controls | Â | 3 | 3 | Â | 2 | 2 |
pTa | 0 | 3 | 3 | 0 | 7 | 7 |
pT1 | 2 | 6 | 8 | 1 | 4 | 5 |
pT2 | 0 | 4 | 4 | 0 | 4 | 4 |
pT3 | 7 | 5 | 12 | 7 | 3 | 10 |
pT4 | 2 | 2 | 4 | 2 | 1 | 3 |
Grand total | 11 | 23 | 34 | 10 | 21 | 31 |