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Cox's Proportional Hazard Model for Cause-Specific Survival: Hazard Ratio and 95% CI of Independent Parameters.
| Parameter | Hazard Ratio | P | 95% CI |
| N stage | .002 | ||
| N1vs N0 | 3.42 | .078 | 0.87–13.4 |
| N2vs N0 | 5.23 | .001 | 2.05–13.3 |
| Heparanase extent | 2.76 | .053 | 0.99–7.75 |
