近年来肺癌的发病率与死亡率均呈上升趋势 ,而我国的女性肺癌在肺癌中所占比例较西方经济发达国家的要高得多[1,2 ] ,因此我国女性肺癌病因调查成为人们关注的重点。我们对北京地区女性肺癌进行了病例对照研究 ,以探讨北京市女性肺癌病因。1　材料与方法1.1　研究方法　采取人 In recent years, the incidence and mortality rate of lung cancer have shown an upward trend. The proportion of female lung cancer in lung cancer in our country is much higher than that in western developed countries [1, 2 ]. Therefore, the investigation of the cause of female lung cancer has become a concern in China. the key of. We conducted a case-control study of female lung cancer in Beijing to explore the causes of female lung cancer in Beijing. 1 Materials and Methods 1.1 Research Methods Take People