Table 1 Patient demographic and clinical characteristics
| Â | Number 193(%) | SCRT 48(%) | SRT 119(%) | No RT 36(%) | p |
|---|---|---|---|---|---|
Sex | Â | Â | Â | Â | 0.139 |
 Male | 165 (85.5) | 45 (93.8) | 89 (81.7) | 31 (86.1) |  |
 Female | 28 (14.5) | 3 (6.3) | 20 (18.3) | 5 (13.9) |  |
Age, years | Â | Â | Â | Â | 0.054 |
  ≤ 60 | 100 (51.8) | 32 (66.7) | 50 (45.9) | 18 (50.0) |  |
 >60 | 93 (48.2) | 16 (33.3) | 59 (54.1) | 18 (50.0) |  |
Location of the primary tumor | Â | Â | Â | Â | 0.645 |
 Upper | 27 (14.0) | 8 (16.7) | 14 (12.8) | 5 (13.9) |  |
 Middle | 91 (47.2) | 25 (52.1) | 52 (47.7) | 14 (38.9) |  |
 Lower | 75 (38.9) | 15 (31.3) | 43 (39.4) | 17 (47.2) |  |
Surgery method | Â | Â | Â | Â | <0.001 |
 Sweet approach | 148 (76.7) | 10 (37.0) | 67 (73.6) | 71 (94.7) |  |
 Ivor-Lewis approach | 45 (23.3) | 17 (63..0) | 24 (26.4) | 4 (5.3) |  |
Differentiation degree | Â | Â | Â | Â | 0.488 |
 Well | 25 (13.0) | 6 (12.5) | 15 (13.8) | 4 (11.1) |  |
 Median | 113 (58.5) | 26 (54.2) | 66 (60.6) | 21 (58.3) |  |
 Poor | 54 (28.0) | 16 (33.3) | 28 (25.7) | 10 (27.8) |  |
 Unknown | 1 (0.5) | – | – | – |  |
Pathological T stage* | Â | Â | Â | Â | 0.097 |
 T1 | 5 (2.6) | 1 (2.1) | 2 (1.8) | 2 (5.6) |  |
 T2 | 35 (18.1) | 10 (20.8) | 20 (18.3) | 5 (13.9) |  |
 T3 | 149 (77.2) | 37 (77.1) | 86 (78.9) | 26 (72.2) |  |
 T4a | 4 (2.1) | 0 (0.0) | 1 (0.9) | 2 (8.3) |  |
Pathological N stage* | Â | Â | Â | Â | <0.001 |
 N0 | 106 (54.9) | 35 (72.9) | 64 (58.7) | 7 (19.4) |  |
 N1 | 43 (22.3) | 5 (10.4) | 24 (22.0) | 14 (38.9) |  |
 N2 | 30 (15.5) | 4 (8.3) | 16 (14.7) | 10 (27.8) |  |
 N3 | 14 (7.3) | 4 (8.3) | 5 (4.6) | 5 (13.9) |  |
Pathological TNM stage* | Â | Â | Â | Â | 0.001 |
 IB | 26 (13.5) | 7 (14.6) | 17 (15.6) | 2 (5.6) |  |
 IIA | 80 (41.5) | 28 (58.3) | 47 (43.1) | 5 (13.9) |  |
 IIB | 10 (5.2) | 2 (4.2) | 4 (3.7) | 4 (11.1) |  |
 IIIA | 36 (18.7) | 4 (8.3) | 21 (19.3) | 11 (30.6) |  |
 IIIB | 25 (13.0) | 3 (6.3) | 15 (13.8) | 7 (19.4) |  |
 IIIC | 16 (8.3) | 4 (8.3) | 5 (4.6) | 7 (19.4) |  |
Radiation dose | Â | Â | Â | Â | 0.030 |
 <60Gy | 52 (33.5) | 22 (45.8) | 30 (28.0) | – |  |
  ≥ 60Gy | 103 (66.5) | 26 (54.2) | 77 (72.0) | – |  |