胃病患者幽门螺杆菌感染危险因素的病例对照研究

目的 探索和揭示浙江省胃病患者螺杆菌（Hp )感染的危险因素。方法 病例和对照均来源于浙江大学医学院附属第一医院2000年4－7月间就诊接受胃镜检查的胃病患者561例,胃组织病理切片经美蓝染色法和嗜银染色法均发现Hp者为病例组,反之为对照组。在患者胃镜检查前应双盲法的原则进行面对面调查,采用统一编制的《胃病患者生活与健康状况健康表》,收集被调查表的相关资料。结果 本次调查发现胃病患者总Hp感染率为50．21％,男女性的Hp感染危险因素迥然不同。对男性的研究揭示,人均每日重体力劳动时间、同胞数量、有肝病家族史、喜欢吃辣的食物、吸烟等为危险因素,喜欢吃豆类食物、饮井水、平时吃饭定时、经常饮茶、文化程度等为保护因素。对女性的研究揭示,喝含咖啡因的饲料为危险因素。多因素回归分析显示,喜欢吃蛋类食物和喜欢吃辣的食物为Hp感染的危险因素,而喜欢吃豆类食物和饮茶年限长则为保护因素。结论 应提倡多吃豆类食物,多饮茶,少吃辣的食物。

A case-control study on risk factors of helicobacter pylori infection in out-patients with stomach diseases

Objective To investigate the risk factors of Helicobacter Pylori (Hp) infection. Methods All cases and controls came from 561 cases of out patients with stomach diseases seeking gastroscopy in the Zhejiang Province First Hospital between April and July in 2000. The tissue samples of patients were stained for Hp by the improved Warthin Starry technique and by methylene blue stain for routine histopathology. We classified patients as cases or controls based on the detection of Hp or not. Before gastroscopy,a questionnaire on lifestyly and health condition of was administered to patients by the interviewers.Results The overall prevalence of Hp infection was 50.21% and the risk factors of Hp infection were significantly different between males and females. As for males, the duration of daily heavy phisical activities, numbers of siblings in the household, family history of oiver disease, preference of spicy food and smoking were the risk factors for Hp infection. However, preference of beans and bean products, drinking well water, drinking tea, eating regularly and good education appears to decrease the prevalence of infection. As for females, consumption of caffeine contained beverages seemed to increase risk for infection. By analyzing with unconditional Logistic Regression Model in male and female groups combined, it brought to light that intake of egg and peppery food were the risk factors of infection, and intake of beans and drinking tea were the protective factors.Conclusion Consumption of beans and drinking tea must be advocated and the consumption of spicy food should be discouraged.