Table 2. Stratification analysis for the association between MUC1 rs4072037 A > G polymorphism and GC risk in an Eastern Chinese population.

Variables	rs4072037 (cases/controls)		Crude OR (95% CI)	P	Adjusted ORa (95% CI)	Pa
	AG/AA	GG
Median age, yr
≤ 59	564/574	14/32	0.45 (0.24–0.84)	0.013	0.45 (0.24–0.85)	0.014
> 59	528/550	18/36	0.52 (0.29–0.93)	0.027	0.51 (0.28–0.91)	0.023
Sex
Males	779/773	21/52	0.40 (0.24–0.67)	0.0005	0.40 (0.24–0.68)	0.0006
Females	313/351	11/16	0.77 (0.35–1.69)	0.515	0.81 (0.37–1.78)	0.591
Smoking status
Never	664/574	21/32	0.57 (0.32–1.00)	0.048	0.55 (0.31–0.98)	0.041
Ever	428/550	11/36	0.39 (0.20–0.78)	0.008	0.40 (0.20–0.81)	0.010
Pack-year
0	664/574	21/32	0.57 (0.32–1.00)	0.048	0.55 (0.31–0.98)	0.041
≤ 25 (mean)	222/332	5/21	0.36 (0.13–0.96)	0.041	0.36 (0.13–0.97)	0.044
> 25 (mean)	206/218	6/15	0.42 (0.16–1.11)	0.081	0.48 (0.18–1.27)	0.137
Drinking status
Never	828/804	26/44	0.57 (0.35–0.94)	0.028	0.57 (0.35–0.94)	0.027
Ever	264/320	6/24	0.30 (0.12–0.75)	0.010	0.31 (0.12–0.77)	0.011
Tumor site
GCA	297/1124	8/68	0.45 (0.21–0.94)	0.033	0.42 (0.20–0.89)	0.024
NGCA	795/1124	24/68	0.50 (0.31–0.80)	0.004	0.50 (0.31–0.81)	0.005

^aAdjusted for age, sex, smoking and drinking status in logistic regression models.