title: Relationship between body mass index and incidence of breast cancer.
abstract: OBJECTIVE
  To investigate the relationship between body mass index (BMI) and the breast cancer incidence, so as to making contribution to breast cancer screening in high-risk groups, to adjustment from passive medical treatment to active treatment Methods: BMI status of 206 breast cancer patients and that of 210 healthy subjects at different ages were compared and analyzed.
  
  
  RESULTS
  The mean BMI was significantly higher in breast cancer patients than in healthy subjects 24.45±3.50 vs. 23.80±3.10 kg/m(2), t=-2.189, P=0.001. When stratified by age, BMI were significantly higher in ≥60 age for breast cancer than that of control group (Z=-3.408, P=0.001) and no significant difference in <60 years old .Logistic regression analysis showed that BMI was a risk factor of breast cancer (OR=1.886, 95% CI: 1.122-3.009).
  
  
  CONCLUSIONS
  BMI have a relationship with the occurrence of breast cancer, especially for ≥60 years old.
authors.affiliation: Department of General Surgery, The Affiliated Qingzhou Hospital to Weifang Medical College Qingzhou 262500, Shandong, China.
authors.forename: Hai-Tao
authors.initials: HT
authors.lastname: Li
authors.affiliation: Department of General Surgery, The Affiliated Qingzhou Hospital to Weifang Medical College Qingzhou 262500, Shandong, China.
authors.forename: Xing-Hua
authors.initials: XH
authors.lastname: Han
authors.affiliation: Department of General Surgery, The Affiliated Qingzhou Hospital to Weifang Medical College Qingzhou 262500, Shandong, China.
authors.forename: Ying-Xin
authors.initials: YX
authors.lastname: Liu
authors.affiliation: Department of General Surgery, The Affiliated Qingzhou Hospital to Weifang Medical College Qingzhou 262500, Shandong, China.
authors.forename: Kai-Ming
authors.initials: KM
authors.lastname: Leng
authors.affiliation: Department of General Surgery, The Affiliated Qingzhou Hospital to Weifang Medical College Qingzhou 262500, Shandong, China.
authors.forename: Guo-Min
authors.initials: GM
authors.lastname: Dong
keywords: Obesity; body mass index; breast cancer