Further stratified analysis of the patients indicated that there were significant correlations for rs1342387A/G (P = 0.027) and rs16861205A/G (P = 0.000) with tumor location; rs16850799A/G (P = 0.004) and rs2058033C/A (P = 0.003) with invasion depth; rs16850799A/G (P = 0.019) with the tumor-node-metastasis stage; rs16850799A/G (P = 0.016), rs1501299A/C (P = 0.005) and rs1063538C/T (P = 0.017) with alcohol consumption; rs11612414A/G (P = 0.040) and rs12733285T/C (P = 0.005) with salted food; rs1063538C/T (P = 0.043) with family history of gastric cancer; and rs11612414A/G (P = 0.029) with gender.