| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 13 |
0.4%
|
| 1 | Often | 0 |
0%
|
| 2 | Sometimes | 6 |
0.2%
|
| 3 | Rarely | 9 |
0.3%
|
| 4 | Never | 3356 |
93.9%
|
| 8 | Refused | 1 |
0%
|
| 9 | Missing | 189 |
5.3%
|
| Sysmiss | 45 |