Sex of Respondent
1 = Male
2 = Female
9 = No answer

Highest completed education level: Categories for international comparison
0 = No formal education
1 = Primary school (elementary education)
2 = Lower secondary (secondary completed does not allow entry to
3 = Upper secondary (programs that allows entry to university
4 = Post secondary, non-tertiary (other upper secondary programs
5 = Lower level tertiary, first stage (also technical schools at
6 = Upper level tertiary (Master, Doctor)
9 = No answer, other