Mortality trend of cancer among residents in Guangdong Province

Objective To understand the mortality trend of cancer in Guangdong province.Methods To analyze the three retrospective review data(from 1970 to 1972,from 1990 to 1992,and from 2004 to 2005) of Guangdong Province with SPSS10.0 and Excel.Results In the 1970—1972,1990—1992 and 2004—2005 surveys,the cancer crude death rates were 52.23/100 000,111.49/100 000,and 135.93/100 000,respectively.The standardized mortalities were 53.27/100 000,95.70/100 000,and 94.50/100 000,respectively.The cancer ranked the 3rd,2od,and 1st in all cause of death in the whole province followed in the three periods,respectively.The top five causes of death about malignant neoplasms were liver cancer,esophagus cancer,nasopharygeal cancer,gastric cancer,and lung cancer in 1970—1972,liver cancer,esophagus cancer,lung cancer,gastric cancer,and nasopharyngeal cancer in 1990—1992,and liver cancer,lung cancer,gastric cancer,esophagus cancer,and colorectal cancer in 2004—2005,respectively.Liver cancer was the first death cause of all cancers constantly in the three time surveys(the crude death rate were 11.03/100 000,23.22/100 000,and 37.02/100 000,respectively;the standardized mortalities were 11.17/100 000,20.57/100 000,and 26.95/100 000,respectively).Death cause ranking of lung cancer,gastric cancer,and colorectal cancer were advancing gradually,while the nasopharyngeal carcinoma was moving backward.The mortalities of liver cancer,lung cancer and colorectal cancer were increased in the past thirty years,the cervical cancer was decreased.The crude death rate of nasopharyngeal cancer was increased,but the standardized mortality was decreased.The difference decomposition of death rates showed that other risk factor accounted for 79.25% of the reasons of the increase of the mortality in 1990—1992 compared to 1970—1972,population aging accounting for 20.75%.Population aging accounted for 98.61% for the increase in 2004—2005 compared to 1990—1992.Conclusion The cancer mortality trends have turned to relative increase from absolute increase in Guangdong residents.The corresponding measures should be taken according to the death trend and death model of different cancers.