| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 19 |
0.5%
|
| 1 | Often | 6 |
0.2%
|
| 2 | Sometimes | 507 |
14.2%
|
| 3 | Rarely | 108 |
3%
|
| 4 | Never | 2918 |
81.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 16 |
0.4%
|
| Sysmiss | 45 |