Table 1.
Demographics and univariate survival analysis results of all patients
| Characteristic | No (%) | Univariate analyses | |
|---|---|---|---|
| log-rank P | HR(95%CI) | ||
| Gender | 0.022 | ||
| male | 878 (62.94) | 1.000 | |
| female | 517 (37.06) | 0.774 (0.621,0.964) | |
| Age (years) | |||
| < 55 | 556 (39.86) | 1.000 | |
| ≥ 55 | 839 (60.14) | 1.677 (1.338,2.101) | |
| Occupation | 0.021 | ||
| farmer | 423 (30.32) | 1.000 | |
| worker | 232 (16.63) | 0.788 (0.589,1.056) | |
| office worker and other | 740 (53.05) | 0.724 (0.574,0.913) | |
| Origin | 0.055 | ||
| urban area | 585 (42.12) | 1.000 | |
| rural area | 804 (57.88) | 1.230 (0.995,1.521) | |
| Education level | < 0.001 | ||
| Illiteracy | 92 (6.93) | 1.000 | |
| Primary-middle school | 967 (72.87) | 1.316 (0.826,2.096) | |
| High school and above | 268 (20.20) | 0.663 (0.383,1.147) | |
| TNM classification | < 0.001 | ||
| I | 178 (14.90) | 1.000 | |
| II | 308 (25.77) | 1.395 (0.870,2.234) | |
| III | 219 (18.33) | 2.134 (1.319,3.453) | |
| IV | 490 (41.00) | 2.710 (1.767,4.158) | |
| pT classification | < 0.001 | ||
| T1 | 217 (18.19) | 1.000 | |
| T2 | 395 (33.11) | 1.316 (0.897,1.930) | |
| T3 | 178 (14.92) | 1.734 (1.124,2.676) | |
| T4 | 403 (33.78) | 2.205 (1.531,3.175) | |
| pN classification | < 0.001 | ||
| N0 | 839 (69.17) | 1.000 | |
| N1 | 186 (15.33) | 2.200 (1.638,2.954) | |
| N2 | 181 (14.92) | 3.392 (2.600,4.423) | |
| N3 | 7 (0.58) | 5.016 (2.214,11.367) | |
| Pathological grading | 0.011 | ||
| well | 558 (51.67) | 1.000 | |
| moderate | 375 (34.72) | 1.459 (1.137,1.872) | |
| poor | 147 (13.61) | 1.253 (0.867,1.811) | |
| Adjuvant therapy | 0.064 | ||
| NO | 635 (48.03) | 1.000 | |
| RT | 193 (14.60) | 0.851 (0.601,1.205) | |
| CT | 197 (14.90) | 1.367 (1.019,1.834) | |
| CRT | 297 (22.47) | 1.144 (0.880,1.488) | |
| Tumor site | 0.044 | ||
| Tongue | 525 (37.91) | 1.000 | |
| Gingiva | 155 (11.19) | 1.351 (0.981,1.860) | |
| Floor of mouth | 90 (6.50) | 1.404 (0.933,2.114) | |
| Palate | 103 (7.44) | 1.036 (0.675,1.590) | |
| Buccal | 180 (13.00) | 1.148 (0.832,1.585) | |
| Others | 332 (23.97) | 0.798 (0.591,1.077) | |
| Surgery therapy | < 0.001 | ||
| No | 156 (11.45) | 1.000 | |
| Yes | 1207 (88.55) | 0.194 (0.152,0.249) | |