| Value | Category | Cases | |
|---|---|---|---|
| 1 | Always | 16 |
34.8%
|
| 2 | Sometimes | 9 |
19.6%
|
| 3 | Never | 9 |
19.6%
|
| 9 | Missing | 12 |
26.1%
|
| Sysmiss | 3573 |