| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 1 |
0.1%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 0 |
0%
|
| 0 | always | 60 |
6.2%
|
| 1 | sometimes | 330 |
33.8%
|
| 2 | never | 584 |
59.9%
|
| Sysmiss | 3146 |