NAT2 polymorphism in Omani gastric cancer patients-risk predisposition and clinicopathological associations

Table 6 Independent prognostic factors for survival identified by multivariate analysis in 78 gastric cancer patients who underwent surgical resection

Characteristics	Risk Ratio	95% CI of risk ratio	P
Age			0.30
Less than 40 yr	1
More than 41 yr	2.1	0.4-9.6
Sex			0.70
Male	1
Female	0.7	0.3-1.7
Location			0.02
Distal	1
Non-distal	3.2	1.3-7.8
Histologic type			0.70
Intestinal	1
Non-intestinal	0.5	0.3-1.7
T stage			0.02
T1 + T2	1
T3 + T4	4.1	1.2-13.6
N stage			0.05
Negative	1
Positive	7.7	1-61.5
NAT2			0.18
Slow	1
Rapid	1.9	0.7-5.0
H pylori Status			0.90
Negative	1
Positive	1.1	0.4-3.0