Association between interleukin-21 gene rs907715 polymorphism and gastric precancerous lesions in a Chinese population

Table 3 Association between risk factors and gastric precancerous lesions

Risk factors		NAG		AG		IM
		OR (95%CI)	P value	OR (95%CI)	P value	OR (95%CI)	P value
Age		1.09 (0.99-1.03)	0.315	0.90 (0.88-1.01)	0.412	1.01 (0.99-1.02)	0.313
BMI		1.01 (0.93-1.11)	0.421	0.89 (0.78-1.32)	0.587	1.11 (0.98-1.24)	0.134
Gender	Female	-		-		-
	Male	1.52 (0.79-2.14)	0.156	0.91 (0.42-1.83)	0.792	1.30 (0.88-1.91)	0.199
High salt	No	-		-		-
	Yes	2.58 (1.21-4.88)	0.011	0.59 (0.24-1.77)	0.315	1.01 (0.55-1.41)	0.699
H. pylori infection	No	-		-		-
	Yes	0.59 (0.37-1.08)	0.141	0.39 (0.65-0.99)	0.041	0.90 (0.77-1.31)	0.555
Smoking	No	-		-		-
	Yes	2.15 (1.19-4.44)	0.015	1.11 (0.77-2.10)	0.515	1.97 (1.40-2.58)	0.005
Drinking	No	-		-		-
	Yes	1.00 (0.99-1.39)	0.057	0.731 (0.49-1.19)	0.161	0.95 (0.89-1.33)	0.668
Region	South	-		-		-
	Middle	0.33 (0.28-0.51)	0.009	0.71 (0.46-1.99)	0.669	2.95 (1.45-4.33)	0.007
	North	0.55 (0.40-1.01)	0.053	0.33 (0.21-0.83)	0.010	1.41 (0.89-2.01)	0.313

BMI: Body mass index; H. pylori: Helicobacter pylori; NAG: Non-atrophic gastritis; AG: Atrophic gastritis; IM: Intestinal metaplasia.