| Value | Category | Cases | |
|---|---|---|---|
| 0 | Never | 21 |
1.7%
|
| 1 | Sometimes | 400 |
32.5%
|
| 2 | Often | 810 |
65.8%
|
| Sysmiss | DK | 0 | |
| Sysmiss | RF | 0 | |
| Sysmiss | 109 |