| Value |
Category |
| 0 |
No education, preschool |
| 1 |
Primary |
| 2 |
Secondary 1 |
| 3 |
Secondary 2 |
| 4 |
Professional A |
| 5 |
Professional B |
| 6 |
Higher |
| 9 |
Missing |
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.