Education as 'year of education completed', is a core variable in the MONICA project [ 13].
Education is measured as years of education completed.
Sociodemographic characteristics included age, sex, weight, educational level (years of education completed), and current marital status.
Today, the impacts correlate with each additional year of secondary education completed because primary school completion no longer provides the same level of return.
Education was assessed as the highest level of education completed, ranging from 5 years (primary education) to 18 years (university).
Education was defined as the highest level of formal education completed at the time of the study.
In most of these datasets educational level is measured in years of education completed, so that mean years of schooling could be computed rather straightforwardly.
Parental educational level was the highest level of education completed successfully by a parent.
Education level was classified into those with: postsecondary education; some postsecondary education; completed high school; and some high school education.
Education level was defined as low (lower secondary education or less), medium (secondary education completed), or high (higher education).
The minimum educational level of mothers involved in the study was elementary school education completed.
