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Multivariate analysis: Cox proportional hazard model
| Variable | Hazard ratio (95% CI) | P |
|---|---|---|
| Age | 0.02 (0.001, 0.70) | 0.031 |
| RRM1 expression | 108.98 (4.57, 2600.98) | 0.004 |
| Nodal Status | 1.05 (0.43, 2.55) | 0.92 |
| RRM1 expression and nodal status | 0.08 (0.017, 0.35) | <0.001 |
| Age and RRM1 status | 3.66 (1.06, 12.61) | 0.04 |
| Age and nodal status | 6.90 (1.67, 28.60) | 0.008 |
