Educational attainment
years or ISCED level
Years or credentials. Confounds health behavior, income, and almost every biomarker.
Education is both a cause (health literacy, time preference) and a collider (healthy, conscientious people stay in school). Conditioning on it blindly can open or close backdoors depending on the query.
Also called schooling, credentials.
Connected relationships
MECHANISM+ INCREASES
Observational · High confidence
Educational attainment→Educational homogamy
Higher Educational attainment increases Educational homogamy.
Education sorts the rooms where people meet. Homogamy is mostly a market-design fact.