| Value | Category | Cases | |
|---|---|---|---|
| 1 | Never or hardly ever | 1106 |
97.4%
|
| 2 | In some lessons | 7 |
0.6%
|
| 3 | In most lessons | 1 |
0.1%
|
| 4 | In every lesson | 0 |
0%
|
| 99 | I don't know | 22 |
1.9%
|
| Sysmiss | 1519 |