Behavioral risk factors and socioeconomic inequalities in ischemic heart disease mortality in the United States: A causal mediation analysis using record linkage data.

Additionally, to account for the impact of evolution of educational system in the US in the 20th century, with an increasing trend of college enrollment from the mid-1920s to the end of the century [ 33 ], we created another set of educational groups based on decades-based birth cohort-specific education tertiles, which showed largely robust results.

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