Response options: Missing; Unknown, Not asked in survey, Not applicable, No answer, Don´t know, Argentina (2), Brazil (2), Belarus (2), Chile (2), China (2), Czech Republic (2), India (2), Japan (2), South Korea (2), Mexico (2), Nigeria (2), Poland (2), Russian Federation (2), Slovakia (2), South Africa (2)
Response options: Missing; Unknown; Inappropiate, Not asked, Not applicable, No answer, Don´t know, None, Less than Primary, Primary, Less than Secondary technical/vocational, Secondary technical/vocational, Less than Secondary university preparatory, Secondary university preparatory, Some university education, University degree, DK/NA
