| Value | Category | Cases | Weighted | |
|---|---|---|---|---|
| 1 | never been | 6068 | 12619449 |
20.9%
|
| 2 | have been to school in the past | 16705 | 30387330 |
50.3%
|
| 3 | studying at present | 8750 | 17406550 |
28.8%
|
| Sysmiss | 5617 | 9909510 |