| Characteristics | Total(N) | Odds Ratio (OR) | P value |
| Age (>60 vs. <=60) | 370 | 0.737 (0.489-1.109) | 0.144 |
| Gender (Male vs. Female) | 371 | 0.849 (0.549-1.311) | 0.460 |
| Race (Asian vs. Black or African American & White) | 359 | 2.157 (1.414-3.310) | <0.001 |
| Tumor status (With tumor vs. Tumor free) | 352 | 1.380 (0.904-2.111) | 0.136 |
| Histologic grade (G3 & G4 vs. G1 & G2) | 366 | 2.950 (1.899-4.634) | <0.001 |
| Pathologic stage (Stage III & Stage IV vs. Stage I & Stage II) | 347 | 2.927 (1.768-4.952) | <0.001 |
| T stage (T2 & T3 & T4 vs. T1) | 368 | 2.842 (1.868-4.355) | <0.001 |
| N stage (N1 vs. N0) | 256 | 2.642 (0.333-53.801) | 0.403 |
| M stage (M1 vs. M0) | 270 | 2.580 (0.326-52.531) | 0.414 |