The relationship between educational level and mortality. The Reykjavík Study

Area of Science:

• Public Health
• Epidemiology
• Cardiovascular Disease Research

Background:

• Socioeconomic factors are linked to health outcomes, but their independence from classical risk factors requires further investigation.
• Educational attainment is a key socioeconomic indicator with potential implications for health disparities.

Purpose of the Study:

• To investigate the association between educational level and coronary artery disease (CAD) mortality.
• To examine the relationship between educational level and all-cause mortality.
• To determine if these associations are independent of established cardiovascular risk factors.

Main Methods:

• Utilized data from the Reykjavík Study, following 18,912 participants for 4-30 years.
• Categorized participants into four educational groups (elementary, high school, junior college, university).
• Employed multiple Cox regression analysis, adjusting for age, examination year, and standard cardiovascular risk factors.

Main Results:

• A significant inverse relationship was observed between educational level and both CAD and all-cause mortality in men and women.
• For men, higher education levels were associated with substantial reductions in CAD mortality, even after risk factor adjustment.
• Women also showed significant reductions in CAD and all-cause mortality with increasing education, though university-level data was limited.

Conclusions:

• Educational attainment is a powerful protective factor against both all-cause and CAD mortality.
• The protective effect of education on mortality extends beyond conventional cardiovascular risk factors.
• Findings underscore the importance of education in public health strategies for cardiovascular disease prevention.