Retrospective Investigation On Death Cause And Main Diseases Interventions Among Residents In The Main-stream Areas Of Dawen River

[Objective]To describe the mortality,the proportion and the distribution of all death causes among residents in the areas of Dawen River,and detailedly explore the distribution of primary malignant tumors,and ascertain the difference between study areas and control areas.[Methods]All townships of eight counties in Laiwu city in the upriver areas and in Taian city in the mid-river and downriver areas were regarded as study areas.In order to compare the mortality of malignant tumor among residents in the areas Dawen River flows through and that in the adjacent areas,cluster sampling was adopted to randomly choose one or two townships in the areas Dawen River doesn't flow through as control areas in every county.Control areas might accord with some conditions.As for decided study areas and control areas,we adopted the cross-sectional study method and referred to the first and the second national restrospective investigation sampling program,then confirmed the number of deaths and the death list by some methods,such as checking the information on the death of residence in public security departments,consulting death registers for the death information in medical institutions and talking with some relational people.The medical certificates of death planned by the minister of health were used as original questionnaires to investigate the death causes.The death causes were coded based on ICD-10,and the ultimate death causes were concluded by qualified professionals after training above the county level.The-statistic indexes were calculated with mortality rate and its proportion and the disease burden,etc.[Results]1.54 townships including 41 as study areas and 13 as control areas were investigated in 8 counties in the areas of Dawen River.Aggregated number of the deaths in study areas was 44 554 people,and the yearly mortality rate was 666.79 per 100 000 population(95%CI, 660.60/100 000-672.99/100 000),and the standardized mortality rate was 527.74 per 100 000 population.In control areas,number of the deaths was 9 704 people in all,and the yearly mortality rate was 649.36 per 100 000 population(95%CI,636.44/100 000-662.28/100 000), and the standardized mortality rate was 547.57 per 100 000 population.The standardized mortality rote of all causes of death in study areas was significantly higher than that in control areas(χ~2=327.78,P＜0.05).2.The first death cause among residents was malignant tumor in study and control areas (represented 26.79%and 26.32%).In study areas,the second death cause to the fifth was cerebrovascular diseases(represented 22.27%),cardiovascular diseases(represented 17.86%), respiratory diseases(represented 15.11%)and external causes of death(represented 8.82%)in turn.And in control areas,the order was cerebrovascular diseases(represented 21.83%), respiratory diseases(represented 17.18%),cardiovascular diseases(represented 16.04%),and external causes of death(represented 8.80%).3.The standardized mortality rate of all death cause in Feicheng city was the highest in study areas in all 8 counties,was up to 687.02 per 100 000 population,and that in Xintai was the lowest,397.19 per 100 000 population.The standardized mortality rate of malignant tumor in Feicheng city was the highest in control areas in all 8 counties,was up to 984.52 per 100 000 population,and that in Xintai city was the lowest,411.20 per 100 000 population.4.The mortality rate of malignant tumor in group of 75～years old was the highest in Dawen River,and the mortality rate increased in accordance with the increase of age.5.In study and control areas,the mortality rate of malignant tumor in males was usually higher than that in females.[Conclusions]As theresults revealed,we acquired the mortality,the proportion and the distribution of all death causes among residents in the areas of Dawen River,and other interrelated data.The standardized mortality rote of all causes of death in study areas was significantly higher than that in control areas.In study and control areas,the top five death causes were cerebrovascular diseases,cardiovascular diseases,respiratory diseases and external causes of death.The standardized mortality rate of all death cause in Feicheng city was the highest in study and control areas,and in Xintai city was the lowest.Malignant tumor was ranked first in all death cause,was the focus disease for control and prevention.