| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 9 |
0.3%
|
| 1 | Often | 15 |
0.4%
|
| 2 | Sometimes | 675 |
18.9%
|
| 3 | Rarely | 160 |
4.5%
|
| 4 | Never | 2701 |
75.6%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 14 |
0.4%
|
| Sysmiss | 45 |