Table 1.
The patient characteristics in training and validation cohorts.
| Characteristic | Training Cohort (n = 87) | Validation Cohort (n = 46) | p-value |
|---|---|---|---|
| Age, years | .611 | ||
| Median (range) | 64 (45–85) | 61.5(48–75) | |
| Sex | .122 | ||
| Male | 59 | 37 | |
| Female | 28 | 9 | |
| ECOG PS | .73 | ||
| 0–1 | 45 | 26 | |
| 2 | 42 | 20 | |
| T stage | .613 | ||
| T3 | 38 | 18 | |
| T4 | 49 | 28 | |
| N stage | .209 | ||
| N0 | 30 | 11 | |
| N1 | 57 | 35 | |
| Differentiation | .826 | ||
| Well | 17 | 7 | |
| Fairly | 32 | 18 | |
| Poorly | 38 | 21 | |
| Clinical Stage | .068 | ||
| III | 54 | 36 | |
| IVa | 33 | 10 | |
| Treatment modality | .914 | ||
| RT alone | 10 | 5 | |
| Chemoradiotherapy | 77 | 41 | |
| Tumour Length (cm) | .982 | ||
| ≤5 | 49 | 26 | |
| >5 | 38 | 20 |
RT: radiation therapy.