| Value | Category | Cases | |
|---|---|---|---|
| 0 | 0. none | 34 |
97.1%
|
| 45 | 1 |
2.9%
|
|
| 98 | 98. do not receive homework | 0 |
0%
|
| 99 | 99. don't know | 0 |
0%
|
| Sysmiss | 64 |