Through analysis of this group of patients the authors of this paper think that gastric carcinoma probably has something to do with dietary habit,for instance,the cure foods,the fungal foods and no fresh fruits.
Results Multi factor conditional logistic regression model analysis revealed that low education level,occupational exposure to hazardous agents,living in the room facing east or west,using coal or firewood as fuels,increased cigarettes smoking,eating salt preserved food frequently and NPC family history could increase the risk of NPC. The OR value for each risk factor was 0 713,1 832,2 191,3 677,1 164,3 120 and 15 569 respectively.
Results After confounding adjusted, the result showed that interaction existed in genetic polymorphisms of CYP2E1 RsaⅠand the family history of digestive system disease, smoking, pickled food, irregular diet habit, interaction indexes (γ) value were 1.855, 2.626, 1.736 and 1.714 respectively.
A low exposure-gene effect interaction was found in CYP2E1 RsaⅠgenotype and the frequency of pickled food consumed, while a high exposure-gene effect interaction exist in CYP2E1 RsaⅠgenotype and irregular diet habit.