Trend Analysis of Death Rates in the State of Illinois, 1967-1975

摘要

This report summarizes mortality trends in the State of Illinois and major cities with some air pollution trends during the nine year period, 1967-75. To examine an overall mortality trend in Chicago, downstate Illinois and both combined or Illinois total, age-adjusted death rates were calculated. A declining trend was observed in death rates for all causes, heart disease, cerebrovascular disease, accidents, and pneumonia and influenza in all three groups over the nine year period. However, deaths from malignant neoplasms have encountered an increase over time in both Illinois total and downstate, with the exception of Chicago where cancer death rates were unchanged. The second analysis is to examine mortality and air pollution trends in some major cities to see if both mortality and air pollution have been declining in these cities or if such trends can be observed only in Chicago. There were no common patterns of mortality and air pollution among those cities over the recent nine years; however, a considerable decrease in both mortality (all causes and heart disease) and air pollution (total suspended particulate) was observed in all cities.