Prognostic Analysis of Duodenal Gastrointestinal Stromal Tumors

Table 2

Multivariate analysis of predictive factors for recurrence.

Factors	Odds ratio for DFS (95% CI)	value for DFS	Odds ratio for OS (95% CI)	value for OS
Gender	0.626 (0.133-2.950)	0.554	0.391 (0.033-4.694)	0.459
Tumor size (≤5 versus >5 cm)	1.672 (0.394-7.086)	0.486	1.936 (0.687-69.95)	0.144
Mitotic activity (<5 versus 5~10 versus >10/50 HPF)	1.722 (0.754-3.931)	0.197	0.561 (0.443-6.926)	0.434
Ki-67 index (≤5% versus >5%)	19.714 (2.243-173.2)	0.007	3.442 (0.002-0.537)	0.028