title: [Case-control study on risk factors of laryngeal cancer in Heilongjiang province].
abstract: OBJECTIVE
  To study the incentives of laryngeal cancer in Heilongjiang province.
  
  
  METHODS
  A 1:One matched case control study was used to study the risk factors of laryngeal cancer in Heilongjiang province, distributing all tested staff by the same gender, age, urban and rural. Logistic regression models were used to analysis the relationship.
  
  
  RESULTS
  In single Logistic regression models, such habit as high levels of education, frequently consumption of sauerkraut, BBQ food, processed meats, the less physical activity, a relatively short time, smoking, irascible, and other factors would increase the risk of suffering from laryngeal cancer. But regular consumption of fresh vegetables, coarse grains, eggs, milk, and regular physical activity would reduce the risk of suffering from laryngeal cancer. The odds ratios (OR) were calculated using multiple Logistic regression models, ORs for the highest versus the lowest quintile of intake were 15.502 0 for high levels of education. 8.012 0 for smoking frequently. 7. 2680 for eating sauerkraut. 2.904 0 for eating BBQ food. 0.408 0 for exercise in protective factors.
  
  
  CONCLUSIONS
  Potential risk factors for laryngeal cancer were eating sauerkraut. BBQ food and smoking frequently, but proper exercise may reduce the risk of laryngeal cancer.
authors.affiliation: Department of Otorhinolaryngology Head and Neck Surgery, the Second Affiliated Hospital of Harbin Medical University, Harbin, 150086, China. hljwangchao@yahoo.com.cn
authors.forename: Chao
authors.initials: C
authors.lastname: Wang
authors.forename: Qiuying
authors.initials: Q
authors.lastname: Li
authors.forename: Yu
authors.initials: Y
authors.lastname: Wang
authors.forename: Jiapeng
authors.initials: J
authors.lastname: Feng
authors.forename: Hongchao
authors.initials: H
authors.lastname: Yao
authors.forename: Hui
authors.initials: H
authors.lastname: Xiao
mesh_terms: D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D016022:Case-Control Studies; D002681:China / Q000453:epidemiology; D005260:Female; D006801:Humans; D007822:Laryngeal Neoplasms / Q000453:epidemiology / Q000209:etiology*; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D012307:Risk Factors