Epidemiologic Study on Risk Factors of Cancer in South India-Stomach and Lung Cancer-

为了阐明印度南部马德拉斯素食者胃癌和肺癌的发生关系，1994年进行了两项病例对照研究。在胃癌和肺癌的病例对照研究中，200例新诊断病例被用作病例系列。每例病例均随机选择Madras市区健康居民中年龄性别匹配的健康对照组和同一研究所诊断的其他疾病如哮喘和肺癌患者中的医院对照组作为对照组。两项病例对照研究均包括五个与日常生活有关的因素假设，包括饮食因素、吸烟习惯、心理因素、血清某些维生素水平、感染因素，例如幽门螺杆菌感染，以及遗传因素等，并会在一九九六年年底得出结果。

To clarify the occurrence relation of stomach cancer and lung cancer of vegetarian of Madras in southern India, in 1994 two case-control studies were conducted and started. In both case-control studies of stomach cancer and of lung cancer two hundreds of newly diagnosed cases were used as cases series. For each cases age-sex matched healthy controls from healthy inhabitants of Madras urban area were randomly selected and hospital controls from the patients with other disease of stmach and lung cancer diagnosed at same institute as cases for control seriesIn both case-control studies are including five hypothesis of factors concerning daily life including dietary factors and smoking habits, psychological factors, serum levels of some kinds of vitamins, infectious factors such as Helicobacter pylori infection, and genetic factors.Results will be got by the end of 1996.