| Factors | All | Conventional RT + CT group | IMRT + CT group | χ2 | P |
| n (%) | n (%) | ||||
| Gender |
|
|
| 0.04 | 0.895 |
| Male | 136 (62.4) | 72 (52.6) | 64 (70.0) |
|
|
| Female | 82 (37.6) | 65 (47.4) | 17 (30.0) |
|
|
| Age |
|
|
| 3.28 | 0.149 |
| Median (year) | 49 ± 9.3 | 48 ± 3.8 | 52.6 ± 8.2 |
|
|
| <50 | 121 (55.5) | 93 (67.9) | 28 (34.6) |
|
|
| ≥50 | 97 (44.5) | 44 (32.1) | 53 (65.4) |
|
|
| Histological grade |
|
|
| 2.44 | 0.296 |
| Poorly and moderate differentiated | 160 (74.4) | 93 (67.9) | 67 (82.7) |
|
|
| Undifferentiated | 58 (26.6) | 44 (32.1) | 14 (17.3) |
|
|
| Primary T-stage |
|
|
| 3.04 | 0.810 |
| T1 - T2 | 47 (21.6) | 33 (24.1) | 14 (17.3) |
|
|
| T3 | 93 (42.7) | 57 (41.6) | 36 (44.4) |
|
|
| T4 | 78 (37.7) | 47 (34.3) | 31 (38.3) |
|
|
| N-stage |
|
|
| 7.30 | 0.402 |
| N0 | 31 (14.2) | 19 (13.9) | 12 (14.8 |
|
|
| N1 | 36 (16.5) | 22 (16.1) | 14 (17.3) |
|
|
| N2 | 93 (42.7) | 71 (51.8) | 22 (27.2) |
|
|
| N3 | 58 (26.6) | 25 (18.2) | 33 (40.7) |
|
|
| TNM-stage |
|
|
| 2.72 | 0.257 |
| III | 150 (68.8) | 82 (59.9) | 68 (84.0) |
|
|
| IVa | 68 (31.2) | 55 (40.1) | 13 (16.0) |
|
|
| Total | 218 | 137 | 81 |
|
|