Table 2 Factor analysis for repetitive recurrence
Univariate analysis | Cox proportional hazards regression analysis | |||||||
|---|---|---|---|---|---|---|---|---|
Factors | No. of patients (event) | 5-y re-recurrent free survival | P value | Wald Statistic | Regression coefficient (B) | Relative risk (eB) | 95 % CI | P value |
Age | ||||||||
< 35 y.o. | 66 (18) | 0.626 | 0.332 | |||||
≥ 35 y.o. | 37 (14) | 0.594 | 7.526 | 1.119 | 3.062 | 1.377–6.811 | 0.006 | |
Gender | ||||||||
Male | 53 (13) | 0.656 | 0.341 | |||||
Female | 50 (19) | 0.581 | ||||||
Tumor site | ||||||||
Upper extremity | 79 (23) | 0.591 | 0.089 | |||||
Lower extremity | 24 (9) | 0.636 | ||||||
Tumor location | ||||||||
Site A | 95 (29) | 0.616 | 0.557 | |||||
Site B | 8 (3) | 0.625 | ||||||
Campanacci | ||||||||
I | 12 (4) | 0.550 | 0.433 | |||||
II | 71 (19) | 0.657 | ||||||
III | 20 (9) | 0.524 | ||||||
Initial procedure | ||||||||
Curettage | 98 (30) | 0.603 | 0.785 | |||||
En bloc excision | 5 (2) | 0.800 | ||||||
Status | ||||||||
Group P | 91 (24) | 0.682 | 0.002 | |||||
Group R | 12 (8) | 0.563 | 10.831 | 1.625 | 5.078 | 1.929–13.363 | < 0.001 | |
Second surgery | ||||||||
Curettage | 84 (29) | 0.541 | 0.034 | 8.522 | 2.054 | 8.522 | 1.964–30.590 | 0.004 |
En-bloc excision | 19 (3) | 0.872 | ||||||