Table 2 Prognostic factors for survival rates, univariate analysis
Numbers (n) | 5-yr OS rate (%) | p-value | 5-yr DSS rate (%) | p-value | |
|---|---|---|---|---|---|
Age, years-old | 0.747 | 0.961 | |||
   ≦55 | 188 | 25.5 | 35.2 | ||
   > 55 | 207 | 24.4 | 31.4 | ||
Smoking | 0.029 | 0.075 | |||
   Yes | 342 | 22.5 | 30.3 | ||
   No | 53 | 41.7 | 49.8 | ||
Alcohol drinking | 0.081 | 0.158 | |||
   Yes | 275 | 22.6 | 30.8 | ||
   No | 120 | 29.9 | 37.3 | ||
Betel nut chewing | 0.360 | 0.159 | |||
   Yes | 186 | 24.4 | 32.2 | ||
   No | 209 | 25.0 | 31.3 | ||
T-stage | < 0.001 | < 0.001 | |||
   T1 | 19 | 54.3 | 68.6 | ||
   T2 | 71 | 38.1 | 45.1 | ||
   T3 | 69 | 30.7 | 38.2 | ||
   T4 | 232 | 17.2 | 24.4 | ||
N-stage | < 0.001 | < 0.001 | |||
   N0 | 113 | 32.4 | 40.6 | ||
   N1 | 73 | 36.4 | 43.6 | ||
   N2 | 154 | 20.6 | 30.1 | ||
   N3 | 55 | 0 | 0 | ||
Stage | < 0.001 | < 0.001 | |||
   I/II | 24 | 49.5 | 67.4 | ||
   III | 57 | 47.4 | 53.5 | ||
   IV | 314 | 18.6 | 25.5 | ||
Treatment | 0.229 | 0.069 | |||
   Radical surgery first | 81 | 18.8 | 24.2 | ||
   Organ preservation | 314 | 27.0 | 35.9 |