Person identifier (fix across modules and waves)
Interview year
Interview month
Household identifier (wave 1)
Couple identifier (wave 1)
Country identifier
Language of questionnaire
Month of birth
Year of birth
Born in the country of interview
Foreign country of birth coding
Year came to live in country
Citizenship country of interview
Other citizenship coding
Country-specific question
Highest school degree obtained
Further education: country-specific category 1
Further education: country-specific category 2
Further education: country-specific category 3
Further education: country-specific category 4
Further education: country-specific category 5
Further education: country-specific category 6
Further education: country-specific category 7
Further education: country-specific category 8
Further education: country-specific category 9
Further education: country-specific category 10
Further education: country-specific category 11
Further education: country-specific category 12
Further education: country-specific category 13
Further education: country-specific category 14
Further education: still in education or training
Further education: none
Further education: other
Marital status
Year of marriage, if living together
Year of registered partnership
Year of marriage, if living separated
Since when divorced
Since when widowed
Year of birth of former partner
Highest educational degree of former partner
Further education former partner: country-specific category 1
Further education former partner: country-specific category 2
Further education former partner: country-specific category 3
Further education former partner: country-specific category 4
Further education former partner: country-specific category 5
Further education former partner: country-specific category 6
Further education former partner: country-specific category 7
Further education former partner: country-specific category 8
Further education former partner: country-specific category 9
Further education former partner: country-specific category 10
Further education former partner: country-specific category 11
Further education former partner: country-specific category 12
Further education former partner: country-specific category 13
Further education partner: country-specific category 14
Further education former partner: still in education or training
Further education former partner: none
Further education former partner: other
Is natural parent still alive: mother
Is natural parent still alive: father
Age of death of parent: mother
Age of death of parent: father
Age of natural parent: mother
Age of natural parent: father
Where does parent live: mother
Where does parent live: father
Personal contact with parent during past 12 months: mother
Personal contact with parent during past 12 months: father
Health of parent: mother
Health of parent: father
Ever had any siblings
Oldest or youngest child
How many brothers alive
How many sisters alive
Who answered the questions in dn
Male or female