| Value | Category | Cases | |
|---|---|---|---|
| 0 | pre-primary | 0 |
0%
|
| 1 | primary | 6 |
75%
|
| 2 | secondary lower | 1 |
12.5%
|
| 3 | secondary upper | 0 |
0%
|
| 4 | higher | 1 |
12.5%
|
| 8 | dk | 0 |
0%
|
| Sysmiss | 12228 |