Table 1 Demographic and clinical characteristics of the oral and oropharyngeal cancer patients, n = 1765
Variable | Total | 18 < LNs | 18 ≦ LNs < 25 | 25 ≦ LNs | P value |
|---|---|---|---|---|---|
n = 1765 | n = 598 | n = 289 | n = 878 | ||
RT | 1067 (60.5) | 354 (59.2) | 184 (63.7) | 529 (60.3) | 0.436 |
Gender | |||||
Female | 624 (35.4) | 230 (38.5) | 100 (34.6) | 294 (33.5) | 0.139 |
Male | 1141 (64.6) | 368 (61.5) | 189 (65.4) | 584 (66.5) | |
Age, years (Mean ± SD) | 60.9 ± 12.4 | 62.8 ± 12.6 | 60.7 ± 11.9 | 59.7 ± 12.2 | < 0.001 |
Pathological T classification | |||||
T1 | 883 (50.0) | 332 (55.5) | 138 (47.8) | 413 (47) | 0.004 |
T2 | 882 (50.0) | 266 (44.5) | 151 (52.2) | 465 (53) | |
Differentiation | |||||
Well | 166 (9.4) | 65 (10.9) | 21 (7.3) | 80 (9.1) | 0.095 |
Moderately | 1021 (57.8) | 329 (55) | 186 (64.4) | 506 (57.6) | |
Poorly | 578 (32.7) | 204 (34.1) | 82 (28.4) | 292 (33.3) | |
Site | |||||
Oral cavity | 1108 (62.8) | 360 (60.2) | 185 (64) | 563 (64.1) | 0.277 |
Oropharynx | 657 (37.2) | 238 (39.8) | 104 (36) | 315 (35.9) | |