| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 81 |
6.5%
|
| 1 | Sometimes | 479 |
38.6%
|
| 2 | Often | 666 |
53.7%
|
| Sysmiss | 11 |
0.9%
|
|
| d | DK | 3 |
0.2%
|