Value |
Category |
0 |
None |
1 |
Primary |
2 |
Secondary |
3 |
Higher |
4 |
|
5 |
Cannot be determined |
6 |
|
9 |
Missing/DK |
Sysmiss |
|
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.