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| Variable | Categories compared | Univariate P-value | Multivariate P-value |
|---|---|---|---|
| Stage | T1-2 vsT3-4 | <0.0001 | 0.0004 |
| Grade | G1-2 vs G3 | <0.0001 | 0.0118 |
| Bcl-2 expression | Positive vs negative | 0.0027 | 0.0879 |
| AI | ≦0.25 vs ≧0.25 | 0.0135 | 0.4738 |
| PI | ≦3.65 vs ≧3.65 | <0.0001 | 0.0012 |
