| Value |
Category |
| 01 |
No schooling |
| 02 |
1-3 grades of primary (general) school |
| 03 |
4-5 grades of primary (general) school |
| 04 |
6-7 grades of primary (general) school |
| 05 |
8 grades of primary (general) school |
| 06 |
1-4 grades of secondary school without final exam |
| 07 |
Secondary school with final examination |
| 08 |
Attended third-level education, without diploma |
| 09 |
Diploma from non-university third-level education |
| 10 |
University diploma |
| 99 |
NIU (not in universe) |
Warning: these figures indicate the number of cases found in the data file. They cannot be interpreted as summary statistics of the population of interest.