Table 1.
Patients characteristics (N = 114)
| Characteristics | SR group N (%) | NSR group N (%) | P value |
|---|---|---|---|
| Gender | |||
| Female | 28 (50.9) | 31 (52.5) | 0.862 |
| Male | 27 (49.1) | 28 (47.5) | |
| Age (years) Mean ± SD | 66.8 ± 8.8 | 63.7 ± 8.6 | 0.062 |
| Location of tumor | |||
| Upper | 32 (58.2) | 41 (69.5) | 0.192 |
| Middle | 22 (40.0) | 15 (25.4) | |
| Lower | 1 (1.8) | 3 (5.1) | |
| Initial length (cm) Mean ± SD | 4.9 ± 2.0 | 5.7 ± 2.5 | 0.046 |
| Initial ECOG-PS | |||
| 0-I | 46 (83.6) | 52 (88.1) | 0.523 |
| II | 8 (14.6) | 7 (11.9) | |
| III | 1 (1.8) | 0 (0) | |
| Initial clinical stage# | |||
| I-II | 40 (72.7) | 36 (61.0) | 0.185 |
| III | 15 (27.3) | 23 (39.0) | |
| Initial radiation dose (Gy) Mean ± SD | 61.2 ± 5.4 | 62.1.6 ± 2.6 | 0.262 |
| TRS time | |||
| ≤12 months | 24 (43.6) | 38 (64.4) | 0.026 |
| >12 months | 31 (56.4) | 21 (35.6) | |
| Salvage radiation dose | |||
| ≤50 Gy | 24 (43.6) | NA* | NA* |
| >50 Gy | 31 (56.4) | ||
| Mean ± SD (Gy) | 51.9 ± 10.3 |
#According to TNM classification 6th edition,*NA: not-available.