The mortality of malignant tumors for the residents in Qidong and its life lost analysis during 1986-2004

Objective: To reveal the hazard of the malignant tumors to the health of residents in Qidong during the past 19 years(1986-2004),and to provide clues for prevention and further research of malignant tumors.Methods: The maximum expectant values were used in the life lost study.Results:(1) The five leading causes of death in order of the malignant tumors were liver cancer,lung cancer,gastric cancer,colon-rectum cancer and oesophagus cancer during the past 19 years.The mortality of liver cancer was kept at high level consecutively and lung cancer was raised gruadually,while gastric cancer,colon-rectum cancer were reduced relatively.(2)The(potential years of life lost) PYLLs of the top 5 malignant tumors in order were liver cancer,lung cancer,gastric cancer,leukaemia and colon-rectum cancer.A greater affect has been taken to the(average years of life lost)(AYLL),which caused by leukaemia,liver cancer and colon-rectum cancer.(3)Age-specific mortality rates showed that the highest mortality rates were seen in people under 35 years old with liver cancer and leukaemia and in the range of 35-65 years with liver and lung cancer and in ages over 65 years with lung and stomach cancer.Conclusions: Liver cancer,lung cancer,gastric cancer,leukaemia and colon-rectum cancer did principally cause the life lost,in the mean while,breast cancer can impact on the females' life lost.The prevention and cure of liver cancer is still a necessary mission for Qidong health workers and high attention should be paid on an increase of mortality rate of lung cancer.