Education and stroke: evidence from epidemiology and Mendelian randomization study

Area of Science:

• Epidemiology
• Neurology
• Genetics

Background:

• Stroke remains a leading cause of disability and death globally.
• Socioeconomic factors, such as education, are increasingly recognized as important determinants of health outcomes.
• Understanding the relationship between education and stroke risk is crucial for public health interventions.

Purpose of the Study:

• To investigate the association between education level and the incidence of total, ischemic, and hemorrhagic stroke.
• To determine if there is a causal relationship between education and stroke using Mendelian randomization.

Main Methods:

• Utilized data from 11,509 participants in the Atherosclerosis Risk in Communities (ARIC) study.
• Employed Cox hazard regression models to assess the association between education and stroke incidence.
• Applied two-sample Mendelian randomization to infer causality.

Main Results:

• Advanced education was associated with a 25% decreased rate of total stroke.
• Higher education levels showed reduced rates for ischemic stroke (HR 0.82-0.73).
• Mendelian randomization indicated a potential protective causal effect of education on ischemic stroke (OR 0.764).

Conclusions:

• Higher education is associated with a lower incidence of total and ischemic stroke.
• A protective causal association may exist between education and ischemic stroke.
• Education's impact on hemorrhagic stroke requires further investigation.