Table 2.
The difference in frequency of failures in each risk group divided by T/N stage
| Risk group | Total no. | First LRF | Overall LRF | First DF | |||
|---|---|---|---|---|---|---|---|
| No. | % | No. | % | No. | % | ||
| Low risk | |||||||
| T1-2/N0 | 445 | 9 | 2.0 | 9 | 2.0 | 13 | 2.9 |
| Intermediate risk | |||||||
| T1-2/N1 | 39 | 0 | 0.0 | 0 | 0.0 | 9 | 23.1 |
| T3/N0 | 200 | 8 | 4.0 | 8 | 4.0 | 31 | 15.5 |
| Moderately high | |||||||
| T1-2/N2 | 3 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
| T3/N1 | 78 | 1 | 1.3 | 2 | 2.6 | 20 | 25.6 |
| T4/N0 | 6 | 0 | 0.0 | 0 | 0.0 | 0 | 0.0 |
| High risk | |||||||
| T3/N2 | 43 | 6 | 14.0 | 6 | 14.0 | 12 | 27.9 |
| T4/N1 | 7 | 0 | 0.0 | 1 | 14.3 | 2 | 28.6 |
| T4/N2 | 5 | 1 | 20.0 | 2 | 40.0 | 3 | 60.0 |
We followed the Gunderson’s risk group classification (Gunderson et al. 2004)
LRF locoregional failure, DF distant failure