【摘要】 目的 :探索北京地区乳腺癌的主要危险因素。方法 :采用 1∶ 1配对的病例对照研究方法 ,共抽取 35 0对样本 ,进行了多变量的筛检分析。结果 :精神、心理因素和良性乳腺疾病史是生物效应较强的主要危险因素 ,而产后哺乳及常吃玉米为乳腺癌的保护因子。结论 :此次研究结果与国内其它城市相关研究结果基本一致 ,但亦存在一定的地区性差异。更多还原

【Abstract】 Objective:Breast cancer is the most common malignant neoplasm in women in the world.A population based case control study was carried out to identify the risk factors for breast cancer in Beijing.Methods:350 cases matched 1∶1 with controls were interviewed.Conditional Logistic regression was used in data analysis.Results:The resutls showed that history of breast benign diseases,psychological repression were the main risk factors.Protective factors were habitual consumption of corn and lactation.Conclustions:These results were consistent with those in other cities,but differences still existed in different cities.更多还原