| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 30 |
0.8%
|
| 1 | Often | 3 |
0.1%
|
| 2 | Sometimes | 6 |
0.2%
|
| 3 | Rarely | 16 |
0.4%
|
| 4 | Never | 3325 |
93%
|
| 8 | Refused | 6 |
0.2%
|
| 9 | Missing | 188 |
5.3%
|
| Sysmiss | 45 |