| Valeur | Catégorie | le cas | |
|---|---|---|---|
| 1 | primary | 21 |
75%
|
| 2 | secondary i | 6 |
21.4%
|
| 3 | secondary ii | 1 |
3.6%
|
| 4 | higher | 0 |
0%
|
| 8 | dk | 0 |
0%
|
| Sysmiss | 5115 |