Characteristics | Total | High risk | Low risk | χ 2 | p value |
---|---|---|---|---|---|
Survival state | |||||
 Alive | 352 | 149 | 203 | 36.71 | 0 |
 Dead | 172 | 122 | 50 |  |  |
Age (years) | |||||
  ≤ 65 | 344 | 174 | 170 |  | 0.53 |
  > 65 | 180 | 97 | 83 | 0.39 |  |
Gender | |||||
 Female | 185 | 96 | 89 | 0 | 1 |
 Male | 339 |  | 175 | 164 |  |
Grade | |||||
 G1 | 14 | 7 | 7 | 17.85 | 0.0013 |
 G2 | 225 | 104 | 121 |  |  |
 G3 | 206 | 103 | 103 |  |  |
 G4 | 74 | 52 | 22 |  |  |
 GX | 5 | 5 | 0 |  |  |
Stage | |||||
 Stage I | 263 | 120 | 143 | 10.92 | 0.012 |
 Stage II | 56 | 30 | 26 |  |  |
 Stage III | 123 | 67 | 56 |  |  |
 Stage IV | 82 | 54 | 28 |  |  |