Value |
Category |
-99 |
Don't know |
0 |
No year approved in the level |
1 |
|
2 |
|
3 |
|
4 |
|
5 |
|
6 |
|
10 |
|
31 |
Graduated (?) |
33 |
|
39 |
|
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.