Table 1.
Patient and tumor characteristics
| Characteristics | Total (%) | 70-74 years (%) | > 74 years (%) | p value |
|---|---|---|---|---|
| Gender | 0.550 | |||
| Male | 103 (53.9) | 60 (52.2) | 43 (56.5) | |
| Female | 88 (46.1) | 55 (47.8) | 33 (43.5) | |
| KPS | 0.001 | |||
| ≥ 80 | 90 (47.1) | 65 (56.5) | 25 (32.9) | |
| 70 | 101 (52.9) | 50 (43.5) | 51 (67.1) | |
| The length | 0.029 | |||
| ≤ 5.0 cm | 99 (51.8) | 67 (58.3) | 32 (42.1) | |
| > 5.0 cm | 92 (48.2) | 48 (41.7) | 44 (57.9) | |
| Tumor location | 0.079 | |||
| Upper | 51 (26.7) | 37 (32.2) | 14 (18.4) | |
| Middle | 123 (64.4) | 67 (58.3) | 56 (73.7) | |
| Lower | 6 (7.9) | 11 (9.5) | 6 (7.9) | |
| T stage | 0.098 | |||
| T2 | 40 (20.9) | 29 (25.2) | 11 (14.5) | |
| T3 | 66 (34.6) | 34 (29.6) | 32 (42.1) | |
| T4 | 85 (44.5) | 52 (45.2) | 33 (43.4) | |
| N stage | 0.279 | |||
| N0 | 109 (57.1) | 62 (53.9) | 47 (61.8) | |
| N1 | 82 (42.9) | 53 (46.1) | 29 (38.2) | |
| 6th AJCC stage | 0.810 | |||
| IIa | 72 (30.7) | 43 (37.4) | 29 (38.2) | |
| IIb | 10 (5.0) | 7 (6.1) | 3 (3.9) | |
| III | 109 (64.3) | 65 (56.5) | 44 (57.9) | |
| RT dose | 0.047 | |||
| ≤ 66 Gy | 167 (87.4) | 105 (91.3) | 62 (81.6) | |
| > 66 Gy | 24 (12.6) | 10 (8.7) | 14 (18.4) |
RT – radiotherapy alone, OS – overall survival rate, LCR – local control rate