| Value | Category | Cases | |
|---|---|---|---|
| -9 | don't know | 3 |
0.3%
|
| -8 | does not apply | 0 |
0%
|
| -7 | refused to answer | 0 |
0%
|
| 0 | always | 127 |
13%
|
| 1 | sometimes | 257 |
26.4%
|
| 2 | never | 588 |
60.3%
|
| Sysmiss | 3146 |