title: Time trends of incidence of digestive system cancers in changle of China during 1988-2002.
abstract: OBJECTIVE
  To analyze the incidence of digestive system cancer in Changle of China over a 15-year period.
  
  
  METHODS
  The datasets were presented as time-series of China-standardized annual incidence during 1988-2002. Linear regression model was used to analyze the incidence of stomach, liver, esophagus and colorectal cancers.
  
  
  RESULTS
  Linear regression models for the time-series of stomach and esophagus cancer incidences for both men and women were statistically significant (P < 0.05); Regression models for liver cancer and for colorectal cancer were statistically significant for men (P < 0.05).
  
  
  CONCLUSIONS
  The incidence rates of stomach and esophagus cancers for both men and women had down tendencies. For men, liver cancer had a down trend of the incidence and colorectal cancer had an upward trend of the incidence rate.
authors.affiliation: Department of Epidemiology and Health Statistics, Fujian Medical University, Fuzhou 350004, Fujian Province, China. tianjun@mail.fjmu.edu.cn
authors.forename: Jun
authors.initials: J
authors.lastname: Tian
authors.forename: Jian-Shun
authors.initials: JS
authors.lastname: Chen
mesh_terms: D002681:China / Q000453:epidemiology; D015179:Colorectal Neoplasms / Q000453:epidemiology*; D004938:Esophageal Neoplasms / Q000453:epidemiology*; D005260:Female; D006801:Humans; D015994:Incidence; D016014:Linear Models; D008113:Liver Neoplasms / Q000453:epidemiology*; D008137:Longitudinal Studies; D008297:Male; D012727:Sex Characteristics; D013274:Stomach Neoplasms / Q000453:epidemiology*