【摘要】 本研究为1∶1配对的病例对照研究,通过对97例胃癌病人和对照的血清维生素 A、E 和某些元素的分析,采用条件 Logistic 回归模型分析,发现病人血清维生素 A、E 和 Se、Zn、Ca 及 Zn/Cd 比值降低,Cu、Cd 和 Cu/Zn 比值增高是胃癌发生的危险因素,并都有明显的剂量反应关系。更多还原

【Abstract】 A case-control study was conducted with serum vitamins A & E and some elem-ents determined in 97 gastric cancer patients and equal number of matched controls.The data were analysed by using conditional logistic regression model,chi square test.After adjusting for confounding factors,the results showed that low levels of serumvitamins A & E,Se,Zn,Ca and low ratio of Zn/Cd,and high levels of serumCu,Cd and high ratio of Cu/Zn were the risk factors for gastric cancer.更多还原