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对１０１例胃癌１：１病例对照调查资料进行了分析。条件Ｌｏｇｉｓｔｉｃ回归模型表明，胃癌的主要危险因素为不良饮食习惯（包括生气吃饭、饮食不定时、喜烫食、进食快、暴饮暴食、喜于冷硬食）、胃病史、一级亲属胃癌史、精神创伤、豆类及新鲜蔬菜摄入量少等。胃癌患者一级亲属的遗传率为５２．４±６．４８％。
101 cases of gastric cancer 1: 1 case-control survey data were analyzed. The conditional Logistic regression model showed that the main risk factors for gastric cancer were poor eating habits (including angry eating, irregular diet, hi-hot, fasting, overeating, hi chilled foods), stomach history, history of gastric cancer in first-degree relatives , Trauma, less intake of beans and fresh vegetables, etc. The heritability of first-degree relatives of gastric cancer patients was 52.4 ± 6.48%.