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Cox Hazard RG versus FG
| Case | Parameter | P | HR | 95% Confidence Interval | |
| Lower Bound | Upper Bound | ||||
| All cases | Complications within 1 year | <0.001 | 5.8 | 3.5 | 9.6 |
| Revisions within 1 year | <0.001 | 11.0 | 2.9 | 41.2 | |
| Single-level | Complications within 1 year | <0.001 | 7.1 | 3.8 | 13.2 |
| Revisions within 1 year | 0.036 | 6.6 | 1.1 | 38.0 | |
HR indicates hazard ratio.
