Table 2: Multivariate analysis of predictive factors for recurrence.

FactorsOdds ratio for DFS (95% CI) value for DFSOdds ratio for OS (95% CI) value for OS

Gender0.626 (0.133-2.950)0.5540.391 (0.033-4.694)0.459
Tumor size (≤5 versus >5 cm)1.672 (0.394-7.086)0.4861.936 (0.687-69.95)0.144
Mitotic activity (<5 versus 5~10 versus >10/50 HPF)1.722 (0.754-3.931)0.1970.561 (0.443-6.926)0.434
Ki-67 index (≤5% versus >5%)19.714 (2.243-173.2)0.0073.442 (0.002-0.537)0.028