Patient characteristics
| Characteristic | No. of patients (%) | Chemoradiotherapy (n=62) | Radiotherapy (n=21) | P value |
| Patient details | All patients (n=83) | |||
| Age (years) | ||||
| Mean (SD; range) | 74.3 (±5.36; 65–86) | 72.8 (±4.22; 65–83) | 79.0 (±5.71; 66–86) | p=0.0001 p≤0.0001 |
| >75 (%) | 38 (45.8) | 21 (33.9) | 17 (80.9) | |
| Gender | ||||
| Male | 39 (47.0) | 32 (51.6) | 7 (33.3) | p=0.147 |
| Female | 44 (53.0) | 30 (48.4) | 14 (66.7) | |
| ECOG performance status (PS) | ||||
| PS 0 | 39 (47.0) | 32 (51.6) | 7 (33.3) | p=0.001 |
| PS 1 | 37 (44.6) | 29 (46.8) | 8 (38.1) | |
| PS 2 | 7 (8.4) | 1 (1.61) | 6 (28.6) | |
| Overall stage TNM 8 | ||||
| Stage I | 6 (7.2) | 5 (8.1) | 1 (4.8) | p=0.485 |
| Stage II | 45 (54.2) | 31 (50.0) | 14 (66.7) | |
| Stage III | 30 (36.14) | 24 (38.71) | 6 (28.57) | |
| Unknown | 2 (2.4) | 2 (3.2) | – | |
| GTV length | ||||
| Median (cm) (SD; IQR) | 5.7 (±3.01; 4.1–8.25) | 6.2 (±3.28; 4.1–8.8) | 5.2 (±1.94; 4.1–6.5) | p=0.281 |
| ≤6 cm | 41 (49.4) | 29 (46.8) | 12 (57.1) | |
| >6 cm | 39 (46.99) | 30 (48.8)* | 9 (42.90) | p=0.532 |
Summary of patient characteristics, overall stage: by TNM 8 definition.
*Three GTV values unavailable in chemoradiotherapy group.
GTV, gross tumour volume; TNM, tumour, node, metastases.