| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 198 |
16%
|
| 1 | Sometimes | 570 |
46%
|
| 2 | Often | 452 |
36.5%
|
| Sysmiss | 11 |
0.9%
|
|
| d | DK | 6 |
0.5%
|
| r | RF | 3 |
0.2%
|