| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 107 |
8.6%
|
| 1 | Sometimes | 678 |
54.7%
|
| 2 | Often | 439 |
35.4%
|
| Sysmiss | 11 |
0.9%
|
|
| d | DK | 5 |
0.4%
|