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Factors associated with the need for reoperation in Cox regression analysis
| P value | HR | 95%CI | |
| Early surgery1 | |||
| Yes | 0.04 | 0.42 | 0.19-0.95 |
| No | Reference | ||
| Age at diagnosis | |||
| A1 | 0.75 | - | - |
| A2 | Reference | ||
| Disease location | 0.95 | ||
| L2 | 0.77 | - | - |
| L3 | 0.95 | - | - |
| L1 | Reference | ||
| Disease behavior at diagnosis | 0.56 | ||
| B2 | 0.30 | - | - |
| B3 | 0.65 | - | - |
| B1 | Reference | ||
| Smoking | |||
| Yes | 0.29 | - | - |
| No | Reference | ||
Early resective surgery: Within the year of diagnosis.
