| Value | Category | Cases | |
|---|---|---|---|
| 0 | Always | 24 |
0.7%
|
| 1 | Often | 7 |
0.2%
|
| 2 | Sometimes | 361 |
10.1%
|
| 3 | Rarely | 41 |
1.1%
|
| 4 | Never | 3116 |
87.2%
|
| 8 | Refused | 0 |
0%
|
| 9 | Missing | 25 |
0.7%
|
| Sysmiss | 45 |