Table 1.
Characteristics of patients
| Young group (n=31) | Old group (n=399)a | P-valueb | |
|---|---|---|---|
| Sex | |||
| Male | 19 (61.3) | 277 (69.4) | 0.346 |
| Female | 12 (38.7) | 122 (30.6) | |
| Habits | |||
| Tobacco | 14 (45.2) | 252 (63.2) | 0.047 |
| Alcohol | 8 (25.8) | 168 (42.1) | 0.075 |
| Tumor stage | |||
| T1 | 6 (19.4) | 52 (13.0) | 0.097 |
| T2 | 16 (51.6) | 182 (45.6) | |
| T3 | 0 | 52 (13.0) | |
| T4 | 9 (29.0) | 113 (28.3) | |
| Node stage | |||
| N0 | 28 (90.3) | 295(73.9) | 0.043 |
| N1 | 1 (3.2) | 77 (19.3) | |
| N2 | 2 (6.5) | 26 (6.5) | |
| Tumor differentiation | |||
| Well | 14 (45.2) | 204 (51.1) | 0.711 |
| Moderately | 8 (25.8) | 104 (26.1) | |
| Poorly | 9 (29.0) | 91 (22.8) | |
| Tumor location | |||
| Gingiva | 8 (25.8) | 83 (20.8) | 0.206 |
| Tongue | 15(48.4) | 161 (40.4) | |
| Floor of the mouth | 7 (22.6) | 89 (22.3) | |
| Buccal | 1 (3.2) | 66 (16.5) | |
| Treatment | |||
| Surgery | 25 | 305 | 0.505 |
| Surgery+RA | 6 | 70 | |
| Surgery+RA+CH | 0 | 24 |
a
node stage of 1 patient was unknown;
b
Chi-square test;
Data are number (%) of patients; RA: radiation therapy; CH: chemotherapy.