Table 7.

Cox regression analysis of duodenal gastrointestinal stromal tumor patients

Characteristics	Univariate Cox analysis
	Hazard ratio	95%CI	P value
Age (yr)
< 62	Reference
≥ 62	79.97	0.057-1.12 × 105	0.236
Gender
Male	Reference
Female	0.69	0.115-4.142	0.682
Tumor size (cm)
< 5	Reference
≥ 5	3.725	0.416-33.351	0.240
Location
Other parts	Reference
Descending part	0.617	0.103-3.695	0.597
Risk grade
Very low and low	Reference
Medium and high	41.935	0.009-2.002 × 105	0.387