Analysis of educational differentials in mortality by cause of death was made possible by matching some 340,000 death certificates, of a total of 535,000 deaths which occurred in the United States during the months May-August, 1960, to the 1960 Census records. Since only about 80 percent of the deaths could be matched to census schedules, provision was made for the control of bias by obtaining census-type information for the unmatched deaths.
A strong inverse relation of mortality to level of education obtained among the white population of the United States in 1960 for both males and females, with consistent declines in mortality as years of schooling increased. Specific causes of death were, in the main, also inversely related to education, the most important exceptions being found in the positive relationship between death by reason of prostatic cancer for males and death by reason of mammary cancer for females.
Measurement was obtained of “excess deaths” by cause, that is, the proportion of deaths which would have been saved if the mortality of the three less-educated groups had been equal to that of the best-educated. For males aged 25 years and over, “excess mortality” from all causes of death constituted 9.4 percent of all deaths in 1960 and for females 29.3 percent of all deaths. Excess deaths among males exceeded 40 percent of all deaths from accidents, stomach cancer, and tuberculosis. Excess deaths among females exceeded 40 percent of all deaths caused by stomach cancer, diabetes mellitus, hypertensive disease, and arteriosclerotic and degenerative heart disease.
The study points to the important contribution that socioeconomic epidemiology, as contrasted with bio-medical epidemiology, can make toward the reduction of mortality. Additional papers will flow from this study.