| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 17 |
0.5%
|
| 1 | Often | 4 |
0.1%
|
| 2 | Sometimes | 184 |
5.1%
|
| 3 | Rarely | 109 |
3%
|
| 4 | Never | 3250 |
90.9%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 10 |
0.3%
|
| Sysmiss | 45 |