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为探讨煤矿工人胃癌的关系，本文采用１：３配对病例对照研究方法，对煤矿工人胃癌发病危险因素进行了研究，病例来源于大同矿务局所属医院门诊及住院病人。对照为健康人群。配比条件为居同一地区，同性别，同民族，年龄不超过±３岁，用条件Ｌｏｇｉｓｔｉｃ回归分析。单因素分析结果：７８个因素中２０个因素与煤矿工人胃癌可能有关。多因素分析：选入５个危险因素和１个保护因素（蔬菜），依次为累积接尘量，快食，喜重盐食，精神创伤史，生活饮食不规律。结果说明：煤矿工人胃癌的发生是多因素共同作用的结果，其中接尘量是煤工胃癌发病的主要危险因素（ＯＲ＝８８６）。
In order to explore the relationship among coal miners’ gastric cancer, the 1:3 matched case-control study was used to investigate the risk factors of gastric cancer in coal miners. The cases came from outpatients and inpatients in Datong Mining Bureau hospital. The controls are healthy people. The matching conditions were in the same area, the same sex, the same ethnicity, and the age of no more than ± 3 years old, using conditional logistic regression analysis. Univariate analysis: 20 of the 78 factors may be related to gastric cancer in coal miners. Multivariate analysis: Selected five risk factors and one protective factor (vegetable), followed by cumulative dust intake, fast food, heavy salt diet, history of trauma, and irregular diet. The results showed that the occurrence of gastric cancer in coal miners was the result of multiple factors. The amount of dust exposure was the main risk factor for the incidence of gastric cancer in coal workers (OR=886).