title: [A case control study of lung cancer among workers in dagang oil field, tianjin, china.].
abstract: BACKGROUND
  To investigate the risk factors of lung cancer among the employees who had worked in Dagang oil field, Tianjin, China.
  
  
  METHODS
  A matched case control study was conducted to analyse the association between some exposures and lung cancer risk by univariate and multiple Logistic regression method.
  
  
  RESULTS
  According to the results from univariate and multiple analysis, smoking and previous lung disease increase lung cancer risk with adjusted OR of 1.52 (95%CI: 1.18-1.94) and 3.37 (95%CI: 1.88-7.16) respectively, while the adjusted OR for occupational chemical toxic substance and dust exposure is 0.73 (95%CI: 0.69-1.30) and 0.84 (95%CI: 0.62-1.15) respectively, and there is no significant association between family history of cancer and lung cancer risk in this study.
  
  
  CONCLUSIONS
  Smoking and previous lung disease are the independent risk factors for lung cancer among workers in Dagang oil field, yet due to some potential epidemiological bias, the association between occupational exposure and lung cancer needs further investigation.
authors: Tianjin Lung Cancer Institute, Tianjin Medical University General Hospital, Tianjin 300052, China; Institute of Radiation Medicine, Chinese Academy of Medical sciences, Tianjin 300192, China.
authors: Yaguang
authors: Y
authors: Fan
authors: Jian
authors: J
authors: Wei
authors: Yun
authors: Y
authors: Bai
authors: Libin
authors: L
authors: Xu
authors: Yong
authors: Y
authors: Jiang
authors: Yongcheng
authors: Y
authors: Zhao
authors: Youlin
authors: Y
authors: Qiao
authors: Qinghua
authors: Q
authors: Zhou