… 1975-1979 Ethnicity Father Gender Mother Non- or Pre-DK Education Non- or Pre-DK Occupation Organisational Unit, … 1975-1979 Ethnicity Father Gender Mother Non- or Pre-DK Education Non- or Pre-DK Occupation Organisational Unit, … 1975-1979 Ethnicity Father Gender Mother Non- or Pre-DK Education Non- or Pre-DK Occupation Organisational Unit, …