Education level (referring to at least one parent) was primary school diploma (30%), secondary school diploma (50%) and university degree (21%).
The preponderance of respondents did not receive a Western education, and 11%, 17 %, 12 % and 33 % possessed primary, secondary, diploma and graduate-level certificates, respectively.
The multivariate model included the following covariates: gender, educational level (classified in five levels: high school, college, secondary level, primary school with diploma, primary school without diploma or no schooling), marital status, self-reported diabetes and stroke (model 1).
The association between IgG and IgM status and the onset of AD was controlled for age at inclusion, gender, educational level (primary school with diploma vs no schooling or primary school without diploma) and APOE-ε4 allele.
Thiel was highly talented, during his education from primary school until diploma exams he always received a grade of A in his exams.
Popper had a rather melancholic personality and took some time to settle on a career; he was a trainee carpenter for a time, obtained a primary school teaching diploma in 1925, took a Ph.D. in philosophy in 1928 under the supervision of Karl Bühler and qualified to teach mathematics and physics in secondary school in 1929.
No school or primary school without diploma.
Education was defined as a four level variable (no school/primary without diploma, primary with diploma, secondary without a baccalaureate degree, baccalaureate/university degree).
English as a second language accounted for 12%, and mother's education (primary, secondary or diploma) for 27% of vulnerability.
Education level was determined by asking whether they were illiterate, or completed either primary, intermediary, secondary, diploma, undergraduate or postgraduate levels.
